activitystreams-new/src/activity.rs

use crate::{
    base::{AnyBase, AsBase, Base, Extends},
    markers,
    object::{ApObject, AsObject, Object},
    primitives::OneOrMany,
    unparsed::{Unparsed, UnparsedMut, UnparsedMutExt},
};
use std::convert::TryFrom;
use typed_builder::TypedBuilder;

pub mod kind {
    pub use activitystreams::activity::kind::*;
}

use self::kind::*;

pub trait AsActivity<Kind>: markers::Activity {
    fn activity_ref(&self) -> &Activity<Kind>;
    fn activity_mut(&mut self) -> &mut Activity<Kind>;
}

pub trait ActorAndObjectRef: markers::Activity {
    fn actor_field_ref(&self) -> &OneOrMany<AnyBase>;
    fn object_field_ref(&self) -> &OneOrMany<AnyBase>;
    fn actor_field_mut(&mut self) -> &mut OneOrMany<AnyBase>;
    fn object_field_mut(&mut self) -> &mut OneOrMany<AnyBase>;
}

pub trait TargetRef: markers::Activity {
    fn target_field_ref(&self) -> &OneOrMany<AnyBase>;
    fn target_field_mut(&mut self) -> &mut OneOrMany<AnyBase>;
}

pub trait OriginRef: markers::Activity {
    fn origin_field_ref(&self) -> &OneOrMany<AnyBase>;
    fn origin_field_mut(&mut self) -> &mut OneOrMany<AnyBase>;
}

pub trait OptTargetRef: markers::Activity {
    fn target_field_ref(&self) -> &Option<OneOrMany<AnyBase>>;
    fn target_field_mut(&mut self) -> &mut Option<OneOrMany<AnyBase>>;
}

pub trait OptOriginRef: markers::Activity {
    fn origin_field_ref(&self) -> &Option<OneOrMany<AnyBase>>;
    fn origin_field_mut(&mut self) -> &mut Option<OneOrMany<AnyBase>>;
}

pub trait AsQuestion: markers::Activity {
    fn question_ref(&self) -> &Question;
    fn question_mut(&mut self) -> &mut Question;
}

pub trait ActivityExt<Kind>: AsActivity<Kind> {
    fn result<'a>(&'a self) -> Option<&'a OneOrMany<AnyBase>>
    where
        Kind: 'a,
    {
        self.activity_ref().result.as_ref()
    }

    fn set_result<T>(&mut self, result: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        self.activity_mut().result = Some(result.into().into());
        self
    }

    fn set_many_results<I, T>(&mut self, items: I) -> &mut Self
    where
        I: IntoIterator<Item = T>,
        T: Into<AnyBase>,
    {
        let v: Vec<_> = items.into_iter().map(Into::into).collect();
        self.activity_mut().result = Some(v.into());
        self
    }

    fn add_result<T>(&mut self, result: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        let c = match self.activity_mut().result.take() {
            Some(mut c) => {
                c.add(result.into());
                c
            }
            None => vec![result.into()].into(),
        };
        self.activity_mut().result = Some(c);
        self
    }

    fn take_result(&mut self) -> Option<OneOrMany<AnyBase>> {
        self.activity_mut().result.take()
    }

    fn delete_result(&mut self) -> &mut Self {
        self.activity_mut().result = None;
        self
    }

    fn instrument<'a>(&'a self) -> Option<&'a OneOrMany<AnyBase>>
    where
        Kind: 'a,
    {
        self.activity_ref().instrument.as_ref()
    }

    fn set_instrument<T>(&mut self, instrument: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        self.activity_mut().instrument = Some(instrument.into().into());
        self
    }

    fn set_many_instruments<I, T>(&mut self, items: I) -> &mut Self
    where
        I: IntoIterator<Item = T>,
        T: Into<AnyBase>,
    {
        let v: Vec<_> = items.into_iter().map(Into::into).collect();
        self.activity_mut().instrument = Some(v.into());
        self
    }

    fn add_instrument<T>(&mut self, instrument: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        let c = match self.activity_mut().instrument.take() {
            Some(mut c) => {
                c.add(instrument.into());
                c
            }
            None => vec![instrument.into()].into(),
        };
        self.activity_mut().instrument = Some(c);
        self
    }

    fn take_instrument(&mut self) -> Option<OneOrMany<AnyBase>> {
        self.activity_mut().instrument.take()
    }

    fn delete_instrument(&mut self) -> &mut Self {
        self.activity_mut().instrument = None;
        self
    }
}

pub trait ActorAndObjectRefExt: ActorAndObjectRef {
    fn actor(&self) -> &OneOrMany<AnyBase> {
        self.actor_field_ref()
    }

    fn set_actor<T>(&mut self, actor: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        *self.actor_field_mut() = actor.into().into();
        self
    }

    fn set_many_actors<I, T>(&mut self, items: I) -> &mut Self
    where
        I: IntoIterator<Item = T>,
        T: Into<AnyBase>,
    {
        let v: Vec<_> = items.into_iter().map(Into::into).collect();
        *self.actor_field_mut() = v.into();
        self
    }

    fn add_actor<T>(&mut self, actor: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        self.actor_field_mut().add(actor.into());
        self
    }

    fn object(&self) -> &OneOrMany<AnyBase> {
        self.object_field_ref()
    }

    fn set_object<T>(&mut self, object: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        *self.object_field_mut() = object.into().into();
        self
    }

    fn set_many_objects<I, T>(&mut self, items: I) -> &mut Self
    where
        I: IntoIterator<Item = T>,
        T: Into<AnyBase>,
    {
        let v: Vec<_> = items.into_iter().map(Into::into).collect();
        *self.object_field_mut() = v.into();
        self
    }

    fn add_object<T>(&mut self, object: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        self.object_field_mut().add(object.into());
        self
    }
}

pub trait TargetRefExt: TargetRef {
    fn target(&self) -> &OneOrMany<AnyBase> {
        self.target_field_ref()
    }

    fn set_target<T>(&mut self, target: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        *self.target_field_mut() = target.into().into();
        self
    }

    fn set_many_targets<I, T>(&mut self, items: I) -> &mut Self
    where
        I: IntoIterator<Item = T>,
        T: Into<AnyBase>,
    {
        let v: Vec<_> = items.into_iter().map(Into::into).collect();
        *self.target_field_mut() = v.into();
        self
    }

    fn add_target<T>(&mut self, target: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        self.target_field_mut().add(target.into());
        self
    }
}

pub trait OriginRefExt: OriginRef {
    fn origin(&self) -> &OneOrMany<AnyBase> {
        self.origin_field_ref()
    }

    fn set_origin<T>(&mut self, origin: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        *self.origin_field_mut() = origin.into().into();
        self
    }

    fn set_many_origins<I, T>(&mut self, items: I) -> &mut Self
    where
        I: IntoIterator<Item = T>,
        T: Into<AnyBase>,
    {
        let v: Vec<_> = items.into_iter().map(Into::into).collect();
        *self.origin_field_mut() = v.into();
        self
    }

    fn add_origin<T>(&mut self, origin: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        self.origin_field_mut().add(origin.into());
        self
    }
}

pub trait OptTargetRefExt: OptTargetRef {
    fn target(&self) -> Option<&OneOrMany<AnyBase>> {
        self.target_field_ref().as_ref()
    }

    fn set_target<T>(&mut self, target: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        *self.target_field_mut() = Some(target.into().into());
        self
    }

    fn set_many_targets<I, T>(&mut self, items: I) -> &mut Self
    where
        I: IntoIterator<Item = T>,
        T: Into<AnyBase>,
    {
        let v: Vec<_> = items.into_iter().map(Into::into).collect();
        *self.target_field_mut() = Some(v.into());
        self
    }

    fn add_target<T>(&mut self, target: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        let c = match self.target_field_mut().take() {
            Some(mut c) => {
                c.add(target.into());
                c
            }
            None => vec![target.into()].into(),
        };
        *self.target_field_mut() = Some(c);
        self
    }

    fn take_target(&mut self) -> Option<OneOrMany<AnyBase>> {
        self.target_field_mut().take()
    }

    fn delete_target(&mut self) -> &mut Self {
        *self.target_field_mut() = None;
        self
    }
}

pub trait OptOriginRefExt: OptOriginRef {
    fn origin(&self) -> Option<&OneOrMany<AnyBase>> {
        self.origin_field_ref().as_ref()
    }

    fn set_origin<T>(&mut self, origin: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        *self.origin_field_mut() = Some(origin.into().into());
        self
    }

    fn set_many_origins<I, T>(&mut self, items: I) -> &mut Self
    where
        I: IntoIterator<Item = T>,
        T: Into<AnyBase>,
    {
        let v: Vec<_> = items.into_iter().map(Into::into).collect();
        *self.origin_field_mut() = Some(v.into());
        self
    }

    fn add_origin<T>(&mut self, origin: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        let c = match self.origin_field_mut().take() {
            Some(mut c) => {
                c.add(origin.into());
                c
            }
            None => vec![origin.into()].into(),
        };
        *self.origin_field_mut() = Some(c);
        self
    }

    fn take_origin(&mut self) -> Option<OneOrMany<AnyBase>> {
        self.origin_field_mut().take()
    }

    fn delete_origin(&mut self) -> &mut Self {
        *self.origin_field_mut() = None;
        self
    }
}

pub trait QuestionExt: AsQuestion {
    fn one_of(&self) -> Option<&OneOrMany<AnyBase>> {
        self.question_ref().one_of.as_ref()
    }

    fn any_of(&self) -> Option<&OneOrMany<AnyBase>> {
        self.question_ref().any_of.as_ref()
    }

    fn set_one_of<T>(&mut self, one_of: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        self.question_mut().one_of = Some(one_of.into().into());
        self
    }

    fn set_many_one_ofs<I, T>(&mut self, items: I) -> &mut Self
    where
        I: IntoIterator<Item = T>,
        T: Into<AnyBase>,
    {
        let v: Vec<_> = items.into_iter().map(Into::into).collect();
        self.question_mut().one_of = Some(v.into());
        self
    }

    fn add_one_of<T>(&mut self, one_of: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        let v = match self.question_mut().one_of.take() {
            Some(mut v) => {
                v.add(one_of.into());
                v
            }
            None => vec![one_of.into()].into(),
        };
        self.question_mut().one_of = Some(v);
        self
    }

    fn take_one_of(&mut self) -> Option<OneOrMany<AnyBase>> {
        self.question_mut().one_of.take()
    }

    fn delete_one_of(&mut self) -> &mut Self {
        self.question_mut().one_of = None;
        self
    }

    fn set_any_of<T>(&mut self, any_of: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        self.question_mut().any_of = Some(any_of.into().into());
        self
    }

    fn set_many_any_ofs<I, T>(&mut self, items: I) -> &mut Self
    where
        I: IntoIterator<Item = T>,
        T: Into<AnyBase>,
    {
        let v: Vec<_> = items.into_iter().map(Into::into).collect();
        self.question_mut().any_of = Some(v.into());
        self
    }

    fn add_any_of<T>(&mut self, any_of: T) -> &mut Self
    where
        T: Into<AnyBase>,
    {
        let v = match self.question_mut().any_of.take() {
            Some(mut v) => {
                v.add(any_of.into());
                v
            }
            None => vec![any_of.into()].into(),
        };
        self.question_mut().any_of = Some(v);
        self
    }

    fn take_any_of(&mut self) -> Option<OneOrMany<AnyBase>> {
        self.question_mut().any_of.take()
    }

    fn delete_any_of(&mut self) -> &mut Self {
        self.question_mut().any_of = None;
        self
    }
}

pub type Accept = ActorAndObject<AcceptType>;
pub type Add = ActorAndObject<AddType>;
pub type Block = ActorAndObject<BlockType>;
pub type Create = ActorAndObject<CreateType>;
pub type Dislike = ActorAndObject<DislikeType>;
pub type Flag = ActorAndObject<FlagType>;
pub type Follow = ActorAndObject<FollowType>;
pub type Ignore = ActorAndObject<IgnoreType>;
pub type Join = ActorAndObject<JoinType>;
pub type Leave = ActorAndObject<LeaveType>;
pub type Like = ActorAndObject<LikeType>;
pub type Listen = ActorAndObject<ListenType>;
pub type Read = ActorAndObject<ReadType>;
pub type Reject = ActorAndObject<RejectType>;
pub type TentativeAccept = ActorAndObject<TentativeAcceptType>;
pub type TentativeReject = ActorAndObject<TentativeRejectType>;
pub type Undo = ActorAndObject<UndoType>;
pub type Update = ActorAndObject<UpdateType>;
pub type View = ActorAndObject<ViewType>;

pub type Announce = ActorAndObjectOptTarget<AnnounceType>;
pub type Offer = ActorAndObjectOptTarget<OfferType>;

pub type Move = ActorAndObjectOptOriginAndTarget<MoveType>;
pub type Remove = ActorAndObjectOptOriginAndTarget<RemoveType>;

#[derive(Clone, Debug, Default, serde::Deserialize, serde::Serialize, TypedBuilder)]
#[serde(rename_all = "camelCase")]
#[builder(doc)]
pub struct Activity<Kind> {
    #[serde(skip_serializing_if = "Option::is_none")]
    #[builder(default, setter(strip_option, into))]
    pub result: Option<OneOrMany<AnyBase>>,

    #[serde(skip_serializing_if = "Option::is_none")]
    #[builder(default, setter(strip_option, into))]
    pub instrument: Option<OneOrMany<AnyBase>>,

    #[serde(flatten)]
    pub inner: Object<Kind>,
}

#[derive(Debug, Clone, serde::Deserialize, serde::Serialize, TypedBuilder)]
#[serde(rename_all = "camelCase")]
#[builder(doc)]
pub struct ActorAndObject<Kind> {
    #[builder(setter(into))]
    pub actor: OneOrMany<AnyBase>,

    #[builder(setter(into))]
    pub object: OneOrMany<AnyBase>,

    #[serde(flatten)]
    pub inner: Activity<Kind>,
}

#[derive(Debug, Clone, serde::Deserialize, serde::Serialize, TypedBuilder)]
#[serde(rename_all = "camelCase")]
#[builder(doc)]
pub struct Arrive {
    #[builder(setter(into))]
    pub actor: OneOrMany<AnyBase>,

    #[builder(setter(into))]
    pub origin: OneOrMany<AnyBase>,

    #[serde(flatten)]
    pub inner: Activity<ArriveType>,
}

#[derive(Debug, Clone, serde::Deserialize, serde::Serialize, TypedBuilder)]
#[serde(rename_all = "camelCase")]
#[builder(doc)]
pub struct Invite {
    #[builder(setter(into))]
    pub actor: OneOrMany<AnyBase>,

    #[builder(setter(into))]
    pub object: OneOrMany<AnyBase>,

    #[builder(setter(into))]
    pub target: OneOrMany<AnyBase>,

    #[serde(flatten)]
    pub inner: Activity<InviteType>,
}

#[derive(Debug, Clone, serde::Deserialize, serde::Serialize, TypedBuilder)]
#[serde(rename_all = "camelCase")]
#[builder(doc)]
pub struct Delete {
    #[builder(setter(into))]
    pub actor: OneOrMany<AnyBase>,

    #[builder(setter(into))]
    pub object: OneOrMany<AnyBase>,

    #[serde(skip_serializing_if = "Option::is_none")]
    #[builder(default, setter(strip_option, into))]
    pub origin: Option<OneOrMany<AnyBase>>,

    #[serde(flatten)]
    pub inner: Activity<DeleteType>,
}

#[derive(Debug, Clone, serde::Deserialize, serde::Serialize, TypedBuilder)]
#[serde(rename_all = "camelCase")]
#[builder(doc)]
pub struct ActorAndObjectOptOriginAndTarget<Kind> {
    #[builder(setter(into))]
    pub actor: OneOrMany<AnyBase>,

    #[builder(setter(into))]
    pub object: OneOrMany<AnyBase>,

    #[serde(skip_serializing_if = "Option::is_none")]
    #[builder(default, setter(strip_option, into))]
    pub origin: Option<OneOrMany<AnyBase>>,

    #[serde(skip_serializing_if = "Option::is_none")]
    #[builder(default, setter(strip_option, into))]
    pub target: Option<OneOrMany<AnyBase>>,

    #[serde(flatten)]
    pub inner: Activity<Kind>,
}

#[derive(Debug, Clone, serde::Deserialize, serde::Serialize, TypedBuilder)]
#[serde(rename_all = "camelCase")]
#[builder(doc)]
pub struct ActorAndObjectOptTarget<Kind> {
    #[builder(setter(into))]
    pub actor: OneOrMany<AnyBase>,

    #[builder(setter(into))]
    pub object: OneOrMany<AnyBase>,

    #[serde(skip_serializing_if = "Option::is_none")]
    #[builder(default, setter(strip_option, into))]
    pub target: Option<OneOrMany<AnyBase>>,

    #[serde(flatten)]
    pub inner: Activity<Kind>,
}

#[derive(Debug, Clone, serde::Deserialize, serde::Serialize, TypedBuilder)]
#[serde(rename_all = "camelCase")]
#[builder(doc)]
pub struct Travel {
    #[builder(setter(into))]
    pub actor: OneOrMany<AnyBase>,

    #[serde(skip_serializing_if = "Option::is_none")]
    #[builder(default, setter(strip_option, into))]
    pub origin: Option<OneOrMany<AnyBase>>,

    #[serde(skip_serializing_if = "Option::is_none")]
    #[builder(default, setter(strip_option, into))]
    pub target: Option<OneOrMany<AnyBase>>,

    #[serde(flatten)]
    pub inner: Activity<TravelType>,
}

#[derive(Debug, Clone, serde::Deserialize, serde::Serialize, TypedBuilder)]
#[serde(rename_all = "camelCase")]
#[builder(doc)]
pub struct Question {
    #[serde(skip_serializing_if = "Option::is_none")]
    #[builder(default, setter(strip_option, into))]
    pub one_of: Option<OneOrMany<AnyBase>>,

    #[serde(skip_serializing_if = "Option::is_none")]
    #[builder(default, setter(strip_option, into))]
    pub any_of: Option<OneOrMany<AnyBase>>,

    #[serde(flatten)]
    pub inner: Activity<QuestionType>,
}

impl<Kind> Activity<Kind> {
    fn extending(mut inner: Object<Kind>) -> Result<Self, serde_json::Error> {
        let result = inner.remove("result")?;
        let instrument = inner.remove("instrument")?;

        Ok(Activity {
            result,
            instrument,
            inner,
        })
    }

    fn retracting(self) -> Result<Object<Kind>, serde_json::Error> {
        let Activity {
            result,
            instrument,
            mut inner,
        } = self;

        inner
            .insert("result", result)?
            .insert("instrument", instrument)?;

        Ok(inner)
    }
}

impl<Kind> ActorAndObject<Kind> {
    fn extending(object: Object<Kind>) -> Result<Self, serde_json::Error> {
        let mut inner = Activity::extending(object)?;

        let actor = inner.remove("actor")?;
        let object = inner.remove("object")?;

        Ok(ActorAndObject {
            actor,
            object,
            inner,
        })
    }

    fn retracting(self) -> Result<Object<Kind>, serde_json::Error> {
        let ActorAndObject {
            actor,
            object,
            mut inner,
        } = self;

        inner.insert("actor", actor)?.insert("object", object)?;

        inner.retracting()
    }
}

impl Arrive {
    fn extending(object: Object<ArriveType>) -> Result<Self, serde_json::Error> {
        let mut inner = Activity::extending(object)?;

        let actor = inner.remove("actor")?;
        let origin = inner.remove("origin")?;

        Ok(Arrive {
            actor,
            origin,
            inner,
        })
    }

    fn retracting(self) -> Result<Object<ArriveType>, serde_json::Error> {
        let Arrive {
            actor,
            origin,
            mut inner,
        } = self;

        inner.insert("actor", actor)?.insert("origin", origin)?;

        inner.retracting()
    }
}

impl Invite {
    fn extending(object: Object<InviteType>) -> Result<Self, serde_json::Error> {
        let mut inner = Activity::extending(object)?;

        let actor = inner.remove("actor")?;
        let object = inner.remove("object")?;
        let target = inner.remove("target")?;

        Ok(Invite {
            actor,
            object,
            target,
            inner,
        })
    }

    fn retracting(self) -> Result<Object<InviteType>, serde_json::Error> {
        let Invite {
            actor,
            object,
            target,
            mut inner,
        } = self;

        inner
            .insert("actor", actor)?
            .insert("object", object)?
            .insert("target", target)?;

        inner.retracting()
    }
}

impl Delete {
    fn extending(object: Object<DeleteType>) -> Result<Self, serde_json::Error> {
        let mut inner = Activity::extending(object)?;

        let actor = inner.remove("actor")?;
        let object = inner.remove("object")?;
        let origin = inner.remove("origin")?;

        Ok(Delete {
            actor,
            object,
            origin,
            inner,
        })
    }

    fn retracting(self) -> Result<Object<DeleteType>, serde_json::Error> {
        let Delete {
            actor,
            object,
            origin,
            mut inner,
        } = self;

        inner
            .insert("actor", actor)?
            .insert("object", object)?
            .insert("origin", origin)?;

        inner.retracting()
    }
}

impl<Kind> ActorAndObjectOptOriginAndTarget<Kind> {
    fn extending(object: Object<Kind>) -> Result<Self, serde_json::Error> {
        let mut inner = Activity::extending(object)?;

        let actor = inner.remove("actor")?;
        let object = inner.remove("object")?;
        let origin = inner.remove("origin")?;
        let target = inner.remove("target")?;

        Ok(ActorAndObjectOptOriginAndTarget {
            actor,
            object,
            origin,
            target,
            inner,
        })
    }

    fn retracting(self) -> Result<Object<Kind>, serde_json::Error> {
        let ActorAndObjectOptOriginAndTarget {
            actor,
            object,
            origin,
            target,
            mut inner,
        } = self;

        inner
            .insert("actor", actor)?
            .insert("object", object)?
            .insert("origin", origin)?
            .insert("target", target)?;

        inner.retracting()
    }
}

impl<Kind> ActorAndObjectOptTarget<Kind> {
    fn extending(object: Object<Kind>) -> Result<Self, serde_json::Error> {
        let mut inner = Activity::extending(object)?;

        let actor = inner.remove("actor")?;
        let object = inner.remove("object")?;
        let target = inner.remove("target")?;

        Ok(ActorAndObjectOptTarget {
            actor,
            object,
            target,
            inner,
        })
    }

    fn retracting(self) -> Result<Object<Kind>, serde_json::Error> {
        let ActorAndObjectOptTarget {
            actor,
            object,
            target,
            mut inner,
        } = self;

        inner
            .insert("actor", actor)?
            .insert("object", object)?
            .insert("target", target)?;

        inner.retracting()
    }
}

impl Travel {
    fn extending(object: Object<TravelType>) -> Result<Self, serde_json::Error> {
        let mut inner = Activity::extending(object)?;

        let actor = inner.remove("actor")?;
        let origin = inner.remove("origin")?;
        let target = inner.remove("target")?;

        Ok(Travel {
            actor,
            origin,
            target,
            inner,
        })
    }

    fn retracting(self) -> Result<Object<TravelType>, serde_json::Error> {
        let Travel {
            actor,
            origin,
            target,
            mut inner,
        } = self;

        inner
            .insert("actor", actor)?
            .insert("origin", origin)?
            .insert("target", target)?;

        inner.retracting()
    }
}

impl Question {
    fn extending(object: Object<QuestionType>) -> Result<Self, serde_json::Error> {
        let mut inner = Activity::extending(object)?;

        let one_of = inner.remove("oneOf")?;
        let any_of = inner.remove("anyOf")?;

        Ok(Question {
            one_of,
            any_of,
            inner,
        })
    }

    fn retracting(self) -> Result<Object<QuestionType>, serde_json::Error> {
        let Question {
            one_of,
            any_of,
            mut inner,
        } = self;

        inner.insert("oneOf", one_of)?.insert("anyOf", any_of)?;

        inner.retracting()
    }
}

impl<Kind> markers::Base for Activity<Kind> {}
impl<Kind> markers::Object for Activity<Kind> {}
impl<Kind> markers::Activity for Activity<Kind> {}

impl<Kind> markers::Base for ActorAndObject<Kind> {}
impl<Kind> markers::Object for ActorAndObject<Kind> {}
impl<Kind> markers::Activity for ActorAndObject<Kind> {}

impl<Kind> markers::Base for ActorAndObjectOptTarget<Kind> {}
impl<Kind> markers::Object for ActorAndObjectOptTarget<Kind> {}
impl<Kind> markers::Activity for ActorAndObjectOptTarget<Kind> {}

impl<Kind> markers::Base for ActorAndObjectOptOriginAndTarget<Kind> {}
impl<Kind> markers::Object for ActorAndObjectOptOriginAndTarget<Kind> {}
impl<Kind> markers::Activity for ActorAndObjectOptOriginAndTarget<Kind> {}

impl markers::Base for Arrive {}
impl markers::Object for Arrive {}
impl markers::Activity for Arrive {}
impl markers::IntransitiveActivity for Arrive {}

impl markers::Base for Invite {}
impl markers::Object for Invite {}
impl markers::Activity for Invite {}

impl markers::Base for Delete {}
impl markers::Object for Delete {}
impl markers::Activity for Delete {}

impl markers::Base for Travel {}
impl markers::Object for Travel {}
impl markers::Activity for Travel {}
impl markers::IntransitiveActivity for Travel {}

impl markers::Base for Question {}
impl markers::Object for Question {}
impl markers::Activity for Question {}
impl markers::IntransitiveActivity for Question {}

impl<Inner> markers::Activity for ApObject<Inner> where Inner: markers::Activity {}
impl<Inner> markers::IntransitiveActivity for ApObject<Inner> where
    Inner: markers::IntransitiveActivity
{
}

impl<Kind> Extends<Kind> for Activity<Kind>
where
    Kind: serde::de::DeserializeOwned + serde::ser::Serialize,
{
    type Error = serde_json::Error;

    fn extends(base: Base<Kind>) -> Result<Self, Self::Error> {
        let inner = Object::extends(base)?;
        Self::extending(inner)
    }

    fn retracts(self) -> Result<Base<Kind>, Self::Error> {
        let inner = self.retracting()?;
        inner.retracts()
    }
}

impl<Kind> TryFrom<Object<Kind>> for Activity<Kind> {
    type Error = serde_json::Error;

    fn try_from(object: Object<Kind>) -> Result<Self, Self::Error> {
        Self::extending(object)
    }
}

impl<Kind> TryFrom<Activity<Kind>> for Object<Kind> {
    type Error = serde_json::Error;

    fn try_from(activity: Activity<Kind>) -> Result<Self, Self::Error> {
        activity.retracting()
    }
}

impl<Kind> Extends<Kind> for ActorAndObject<Kind>
where
    Kind: serde::de::DeserializeOwned + serde::ser::Serialize,
{
    type Error = serde_json::Error;

    fn extends(base: Base<Kind>) -> Result<Self, Self::Error> {
        let inner = Object::extends(base)?;
        Self::extending(inner)
    }

    fn retracts(self) -> Result<Base<Kind>, Self::Error> {
        let inner = self.retracting()?;
        inner.retracts()
    }
}

impl<Kind> TryFrom<Object<Kind>> for ActorAndObject<Kind> {
    type Error = serde_json::Error;

    fn try_from(object: Object<Kind>) -> Result<Self, Self::Error> {
        Self::extending(object)
    }
}

impl<Kind> TryFrom<ActorAndObject<Kind>> for Object<Kind> {
    type Error = serde_json::Error;

    fn try_from(activity: ActorAndObject<Kind>) -> Result<Self, Self::Error> {
        activity.retracting()
    }
}

impl Extends<ArriveType> for Arrive {
    type Error = serde_json::Error;

    fn extends(base: Base<ArriveType>) -> Result<Self, Self::Error> {
        let inner = Object::extends(base)?;
        Self::extending(inner)
    }

    fn retracts(self) -> Result<Base<ArriveType>, Self::Error> {
        let inner = self.retracting()?;
        inner.retracts()
    }
}

impl TryFrom<Object<ArriveType>> for Arrive {
    type Error = serde_json::Error;

    fn try_from(object: Object<ArriveType>) -> Result<Self, Self::Error> {
        Self::extending(object)
    }
}

impl TryFrom<Arrive> for Object<ArriveType> {
    type Error = serde_json::Error;

    fn try_from(arrive: Arrive) -> Result<Self, Self::Error> {
        arrive.retracting()
    }
}

impl Extends<InviteType> for Invite {
    type Error = serde_json::Error;

    fn extends(base: Base<InviteType>) -> Result<Self, Self::Error> {
        let inner = Object::extends(base)?;
        Self::extending(inner)
    }

    fn retracts(self) -> Result<Base<InviteType>, Self::Error> {
        let inner = self.retracting()?;
        inner.retracts()
    }
}

impl TryFrom<Object<InviteType>> for Invite {
    type Error = serde_json::Error;

    fn try_from(object: Object<InviteType>) -> Result<Self, Self::Error> {
        Self::extending(object)
    }
}

impl TryFrom<Invite> for Object<InviteType> {
    type Error = serde_json::Error;

    fn try_from(invite: Invite) -> Result<Self, Self::Error> {
        invite.retracting()
    }
}

impl Extends<DeleteType> for Delete {
    type Error = serde_json::Error;

    fn extends(base: Base<DeleteType>) -> Result<Self, Self::Error> {
        let inner = Object::extends(base)?;
        Self::extending(inner)
    }

    fn retracts(self) -> Result<Base<DeleteType>, Self::Error> {
        let inner = self.retracting()?;
        inner.retracts()
    }
}

impl TryFrom<Object<DeleteType>> for Delete {
    type Error = serde_json::Error;

    fn try_from(object: Object<DeleteType>) -> Result<Self, Self::Error> {
        Self::extending(object)
    }
}

impl TryFrom<Delete> for Object<DeleteType> {
    type Error = serde_json::Error;

    fn try_from(delete: Delete) -> Result<Self, Self::Error> {
        delete.retracting()
    }
}

impl<Kind> Extends<Kind> for ActorAndObjectOptOriginAndTarget<Kind>
where
    Kind: serde::de::DeserializeOwned + serde::ser::Serialize,
{
    type Error = serde_json::Error;

    fn extends(base: Base<Kind>) -> Result<Self, Self::Error> {
        let inner = Object::extends(base)?;
        Self::extending(inner)
    }

    fn retracts(self) -> Result<Base<Kind>, Self::Error> {
        let inner = self.retracting()?;
        inner.retracts()
    }
}

impl<Kind> TryFrom<Object<Kind>> for ActorAndObjectOptOriginAndTarget<Kind> {
    type Error = serde_json::Error;

    fn try_from(object: Object<Kind>) -> Result<Self, Self::Error> {
        Self::extending(object)
    }
}

impl<Kind> TryFrom<ActorAndObjectOptOriginAndTarget<Kind>> for Object<Kind> {
    type Error = serde_json::Error;

    fn try_from(activity: ActorAndObjectOptOriginAndTarget<Kind>) -> Result<Self, Self::Error> {
        activity.retracting()
    }
}

impl<Kind> Extends<Kind> for ActorAndObjectOptTarget<Kind>
where
    Kind: serde::de::DeserializeOwned + serde::ser::Serialize,
{
    type Error = serde_json::Error;

    fn extends(base: Base<Kind>) -> Result<Self, Self::Error> {
        let inner = Object::extends(base)?;
        Self::extending(inner)
    }

    fn retracts(self) -> Result<Base<Kind>, Self::Error> {
        let inner = self.retracting()?;
        inner.retracts()
    }
}

impl<Kind> TryFrom<Object<Kind>> for ActorAndObjectOptTarget<Kind> {
    type Error = serde_json::Error;

    fn try_from(object: Object<Kind>) -> Result<Self, Self::Error> {
        Self::extending(object)
    }
}

impl<Kind> TryFrom<ActorAndObjectOptTarget<Kind>> for Object<Kind> {
    type Error = serde_json::Error;

    fn try_from(activity: ActorAndObjectOptTarget<Kind>) -> Result<Self, Self::Error> {
        activity.retracting()
    }
}

impl Extends<TravelType> for Travel {
    type Error = serde_json::Error;

    fn extends(base: Base<TravelType>) -> Result<Self, Self::Error> {
        let inner = Object::extends(base)?;
        Self::extending(inner)
    }

    fn retracts(self) -> Result<Base<TravelType>, Self::Error> {
        let inner = self.retracting()?;
        inner.retracts()
    }
}

impl TryFrom<Object<TravelType>> for Travel {
    type Error = serde_json::Error;

    fn try_from(object: Object<TravelType>) -> Result<Self, Self::Error> {
        Self::extending(object)
    }
}

impl TryFrom<Travel> for Object<TravelType> {
    type Error = serde_json::Error;

    fn try_from(travel: Travel) -> Result<Self, Self::Error> {
        travel.retracting()
    }
}

impl Extends<QuestionType> for Question {
    type Error = serde_json::Error;

    fn extends(base: Base<QuestionType>) -> Result<Self, Self::Error> {
        let inner = Object::extends(base)?;
        Self::extending(inner)
    }

    fn retracts(self) -> Result<Base<QuestionType>, Self::Error> {
        let inner = self.retracting()?;
        inner.retracts()
    }
}

impl TryFrom<Object<QuestionType>> for Question {
    type Error = serde_json::Error;

    fn try_from(object: Object<QuestionType>) -> Result<Self, Self::Error> {
        Self::extending(object)
    }
}

impl TryFrom<Question> for Object<QuestionType> {
    type Error = serde_json::Error;

    fn try_from(question: Question) -> Result<Self, Self::Error> {
        question.retracting()
    }
}

impl<Kind> UnparsedMut for Activity<Kind> {
    fn unparsed_mut(&mut self) -> &mut Unparsed {
        self.inner.unparsed_mut()
    }
}

impl<Kind> UnparsedMut for ActorAndObject<Kind> {
    fn unparsed_mut(&mut self) -> &mut Unparsed {
        self.inner.unparsed_mut()
    }
}

impl UnparsedMut for Arrive {
    fn unparsed_mut(&mut self) -> &mut Unparsed {
        self.inner.unparsed_mut()
    }
}

impl UnparsedMut for Invite {
    fn unparsed_mut(&mut self) -> &mut Unparsed {
        self.inner.unparsed_mut()
    }
}

impl UnparsedMut for Delete {
    fn unparsed_mut(&mut self) -> &mut Unparsed {
        self.inner.unparsed_mut()
    }
}

impl<Kind> UnparsedMut for ActorAndObjectOptOriginAndTarget<Kind> {
    fn unparsed_mut(&mut self) -> &mut Unparsed {
        self.inner.unparsed_mut()
    }
}

impl<Kind> UnparsedMut for ActorAndObjectOptTarget<Kind> {
    fn unparsed_mut(&mut self) -> &mut Unparsed {
        self.inner.unparsed_mut()
    }
}

impl UnparsedMut for Travel {
    fn unparsed_mut(&mut self) -> &mut Unparsed {
        self.inner.unparsed_mut()
    }
}

impl UnparsedMut for Question {
    fn unparsed_mut(&mut self) -> &mut Unparsed {
        self.inner.unparsed_mut()
    }
}

impl<Kind> AsBase<Kind> for Activity<Kind> {
    fn base_ref(&self) -> &Base<Kind> {
        self.inner.base_ref()
    }

    fn base_mut(&mut self) -> &mut Base<Kind> {
        self.inner.base_mut()
    }
}

impl<Kind> AsObject<Kind> for Activity<Kind> {
    fn object_ref(&self) -> &Object<Kind> {
        &self.inner
    }

    fn object_mut(&mut self) -> &mut Object<Kind> {
        &mut self.inner
    }
}

impl<Kind> AsActivity<Kind> for Activity<Kind> {
    fn activity_ref(&self) -> &Activity<Kind> {
        self
    }

    fn activity_mut(&mut self) -> &mut Activity<Kind> {
        self
    }
}

impl<Kind> AsBase<Kind> for ActorAndObject<Kind> {
    fn base_ref(&self) -> &Base<Kind> {
        self.inner.base_ref()
    }

    fn base_mut(&mut self) -> &mut Base<Kind> {
        self.inner.base_mut()
    }
}

impl<Kind> AsObject<Kind> for ActorAndObject<Kind> {
    fn object_ref(&self) -> &Object<Kind> {
        self.inner.object_ref()
    }

    fn object_mut(&mut self) -> &mut Object<Kind> {
        self.inner.object_mut()
    }
}

impl<Kind> AsActivity<Kind> for ActorAndObject<Kind> {
    fn activity_ref(&self) -> &Activity<Kind> {
        &self.inner
    }

    fn activity_mut(&mut self) -> &mut Activity<Kind> {
        &mut self.inner
    }
}

impl<Kind> ActorAndObjectRef for ActorAndObject<Kind> {
    fn actor_field_ref(&self) -> &OneOrMany<AnyBase> {
        &self.actor
    }

    fn object_field_ref(&self) -> &OneOrMany<AnyBase> {
        &self.object
    }

    fn actor_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        &mut self.actor
    }

    fn object_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        &mut self.object
    }
}

impl<Kind> AsBase<Kind> for ActorAndObjectOptTarget<Kind> {
    fn base_ref(&self) -> &Base<Kind> {
        self.inner.base_ref()
    }

    fn base_mut(&mut self) -> &mut Base<Kind> {
        self.inner.base_mut()
    }
}

impl<Kind> AsObject<Kind> for ActorAndObjectOptTarget<Kind> {
    fn object_ref(&self) -> &Object<Kind> {
        self.inner.object_ref()
    }

    fn object_mut(&mut self) -> &mut Object<Kind> {
        self.inner.object_mut()
    }
}

impl<Kind> AsActivity<Kind> for ActorAndObjectOptTarget<Kind> {
    fn activity_ref(&self) -> &Activity<Kind> {
        &self.inner
    }

    fn activity_mut(&mut self) -> &mut Activity<Kind> {
        &mut self.inner
    }
}

impl<Kind> ActorAndObjectRef for ActorAndObjectOptTarget<Kind> {
    fn actor_field_ref(&self) -> &OneOrMany<AnyBase> {
        &self.actor
    }

    fn object_field_ref(&self) -> &OneOrMany<AnyBase> {
        &self.object
    }

    fn actor_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        &mut self.actor
    }

    fn object_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        &mut self.object
    }
}

impl<Kind> OptTargetRef for ActorAndObjectOptTarget<Kind> {
    fn target_field_ref(&self) -> &Option<OneOrMany<AnyBase>> {
        &self.target
    }

    fn target_field_mut(&mut self) -> &mut Option<OneOrMany<AnyBase>> {
        &mut self.target
    }
}

impl<Kind> AsBase<Kind> for ActorAndObjectOptOriginAndTarget<Kind> {
    fn base_ref(&self) -> &Base<Kind> {
        self.inner.base_ref()
    }

    fn base_mut(&mut self) -> &mut Base<Kind> {
        self.inner.base_mut()
    }
}

impl<Kind> AsObject<Kind> for ActorAndObjectOptOriginAndTarget<Kind> {
    fn object_ref(&self) -> &Object<Kind> {
        self.inner.object_ref()
    }

    fn object_mut(&mut self) -> &mut Object<Kind> {
        self.inner.object_mut()
    }
}

impl<Kind> AsActivity<Kind> for ActorAndObjectOptOriginAndTarget<Kind> {
    fn activity_ref(&self) -> &Activity<Kind> {
        &self.inner
    }

    fn activity_mut(&mut self) -> &mut Activity<Kind> {
        &mut self.inner
    }
}

impl<Kind> ActorAndObjectRef for ActorAndObjectOptOriginAndTarget<Kind> {
    fn actor_field_ref(&self) -> &OneOrMany<AnyBase> {
        &self.actor
    }

    fn object_field_ref(&self) -> &OneOrMany<AnyBase> {
        &self.object
    }

    fn actor_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        &mut self.actor
    }

    fn object_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        &mut self.object
    }
}

impl<Kind> OptTargetRef for ActorAndObjectOptOriginAndTarget<Kind> {
    fn target_field_ref(&self) -> &Option<OneOrMany<AnyBase>> {
        &self.target
    }

    fn target_field_mut(&mut self) -> &mut Option<OneOrMany<AnyBase>> {
        &mut self.target
    }
}

impl<Kind> OptOriginRef for ActorAndObjectOptOriginAndTarget<Kind> {
    fn origin_field_ref(&self) -> &Option<OneOrMany<AnyBase>> {
        &self.origin
    }

    fn origin_field_mut(&mut self) -> &mut Option<OneOrMany<AnyBase>> {
        &mut self.origin
    }
}

impl AsBase<ArriveType> for Arrive {
    fn base_ref(&self) -> &Base<ArriveType> {
        self.inner.base_ref()
    }

    fn base_mut(&mut self) -> &mut Base<ArriveType> {
        self.inner.base_mut()
    }
}

impl AsObject<ArriveType> for Arrive {
    fn object_ref(&self) -> &Object<ArriveType> {
        self.inner.object_ref()
    }

    fn object_mut(&mut self) -> &mut Object<ArriveType> {
        self.inner.object_mut()
    }
}

impl AsActivity<ArriveType> for Arrive {
    fn activity_ref(&self) -> &Activity<ArriveType> {
        &self.inner
    }

    fn activity_mut(&mut self) -> &mut Activity<ArriveType> {
        &mut self.inner
    }
}

impl OriginRef for Arrive {
    fn origin_field_ref(&self) -> &OneOrMany<AnyBase> {
        &self.origin
    }

    fn origin_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        &mut self.origin
    }
}

impl AsBase<InviteType> for Invite {
    fn base_ref(&self) -> &Base<InviteType> {
        self.inner.base_ref()
    }

    fn base_mut(&mut self) -> &mut Base<InviteType> {
        self.inner.base_mut()
    }
}

impl AsObject<InviteType> for Invite {
    fn object_ref(&self) -> &Object<InviteType> {
        self.inner.object_ref()
    }

    fn object_mut(&mut self) -> &mut Object<InviteType> {
        self.inner.object_mut()
    }
}

impl AsActivity<InviteType> for Invite {
    fn activity_ref(&self) -> &Activity<InviteType> {
        &self.inner
    }

    fn activity_mut(&mut self) -> &mut Activity<InviteType> {
        &mut self.inner
    }
}

impl ActorAndObjectRef for Invite {
    fn actor_field_ref(&self) -> &OneOrMany<AnyBase> {
        &self.actor
    }

    fn object_field_ref(&self) -> &OneOrMany<AnyBase> {
        &self.object
    }

    fn actor_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        &mut self.actor
    }

    fn object_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        &mut self.object
    }
}

impl TargetRef for Invite {
    fn target_field_ref(&self) -> &OneOrMany<AnyBase> {
        &self.target
    }

    fn target_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        &mut self.target
    }
}

impl AsBase<DeleteType> for Delete {
    fn base_ref(&self) -> &Base<DeleteType> {
        self.inner.base_ref()
    }

    fn base_mut(&mut self) -> &mut Base<DeleteType> {
        self.inner.base_mut()
    }
}

impl AsObject<DeleteType> for Delete {
    fn object_ref(&self) -> &Object<DeleteType> {
        self.inner.object_ref()
    }

    fn object_mut(&mut self) -> &mut Object<DeleteType> {
        self.inner.object_mut()
    }
}

impl AsActivity<DeleteType> for Delete {
    fn activity_ref(&self) -> &Activity<DeleteType> {
        &self.inner
    }

    fn activity_mut(&mut self) -> &mut Activity<DeleteType> {
        &mut self.inner
    }
}

impl ActorAndObjectRef for Delete {
    fn actor_field_ref(&self) -> &OneOrMany<AnyBase> {
        &self.actor
    }

    fn object_field_ref(&self) -> &OneOrMany<AnyBase> {
        &self.object
    }

    fn actor_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        &mut self.actor
    }

    fn object_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        &mut self.object
    }
}

impl OptOriginRef for Delete {
    fn origin_field_ref(&self) -> &Option<OneOrMany<AnyBase>> {
        &self.origin
    }

    fn origin_field_mut(&mut self) -> &mut Option<OneOrMany<AnyBase>> {
        &mut self.origin
    }
}

impl AsBase<TravelType> for Travel {
    fn base_ref(&self) -> &Base<TravelType> {
        self.inner.base_ref()
    }

    fn base_mut(&mut self) -> &mut Base<TravelType> {
        self.inner.base_mut()
    }
}

impl AsObject<TravelType> for Travel {
    fn object_ref(&self) -> &Object<TravelType> {
        self.inner.object_ref()
    }

    fn object_mut(&mut self) -> &mut Object<TravelType> {
        self.inner.object_mut()
    }
}

impl AsActivity<TravelType> for Travel {
    fn activity_ref(&self) -> &Activity<TravelType> {
        self.inner.activity_ref()
    }

    fn activity_mut(&mut self) -> &mut Activity<TravelType> {
        self.inner.activity_mut()
    }
}

impl OptTargetRef for Travel {
    fn target_field_ref(&self) -> &Option<OneOrMany<AnyBase>> {
        &self.target
    }

    fn target_field_mut(&mut self) -> &mut Option<OneOrMany<AnyBase>> {
        &mut self.target
    }
}

impl OptOriginRef for Travel {
    fn origin_field_ref(&self) -> &Option<OneOrMany<AnyBase>> {
        &self.origin
    }

    fn origin_field_mut(&mut self) -> &mut Option<OneOrMany<AnyBase>> {
        &mut self.origin
    }
}

impl AsBase<QuestionType> for Question {
    fn base_ref(&self) -> &Base<QuestionType> {
        self.inner.base_ref()
    }

    fn base_mut(&mut self) -> &mut Base<QuestionType> {
        self.inner.base_mut()
    }
}

impl AsObject<QuestionType> for Question {
    fn object_ref(&self) -> &Object<QuestionType> {
        self.inner.object_ref()
    }

    fn object_mut(&mut self) -> &mut Object<QuestionType> {
        self.inner.object_mut()
    }
}

impl AsActivity<QuestionType> for Question {
    fn activity_ref(&self) -> &Activity<QuestionType> {
        &self.inner
    }

    fn activity_mut(&mut self) -> &mut Activity<QuestionType> {
        &mut self.inner
    }
}

impl AsQuestion for Question {
    fn question_ref(&self) -> &Question {
        self
    }

    fn question_mut(&mut self) -> &mut Question {
        self
    }
}

impl<Inner, Kind> AsActivity<Kind> for ApObject<Inner>
where
    Inner: AsActivity<Kind>,
{
    fn activity_ref(&self) -> &Activity<Kind> {
        self.inner.activity_ref()
    }

    fn activity_mut(&mut self) -> &mut Activity<Kind> {
        self.inner.activity_mut()
    }
}

impl<Inner> ActorAndObjectRef for ApObject<Inner>
where
    Inner: ActorAndObjectRef,
{
    fn actor_field_ref(&self) -> &OneOrMany<AnyBase> {
        self.inner.actor_field_ref()
    }

    fn object_field_ref(&self) -> &OneOrMany<AnyBase> {
        self.inner.object_field_ref()
    }

    fn actor_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        self.inner.actor_field_mut()
    }

    fn object_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        self.inner.object_field_mut()
    }
}

impl<Inner> TargetRef for ApObject<Inner>
where
    Inner: TargetRef,
{
    fn target_field_ref(&self) -> &OneOrMany<AnyBase> {
        self.inner.target_field_ref()
    }

    fn target_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        self.inner.target_field_mut()
    }
}

impl<Inner> OriginRef for ApObject<Inner>
where
    Inner: OriginRef,
{
    fn origin_field_ref(&self) -> &OneOrMany<AnyBase> {
        self.inner.origin_field_ref()
    }

    fn origin_field_mut(&mut self) -> &mut OneOrMany<AnyBase> {
        self.inner.origin_field_mut()
    }
}

impl<Inner> OptTargetRef for ApObject<Inner>
where
    Inner: OptTargetRef,
{
    fn target_field_ref(&self) -> &Option<OneOrMany<AnyBase>> {
        self.inner.target_field_ref()
    }

    fn target_field_mut(&mut self) -> &mut Option<OneOrMany<AnyBase>> {
        self.inner.target_field_mut()
    }
}

impl<Inner> OptOriginRef for ApObject<Inner>
where
    Inner: OptOriginRef,
{
    fn origin_field_ref(&self) -> &Option<OneOrMany<AnyBase>> {
        self.inner.origin_field_ref()
    }

    fn origin_field_mut(&mut self) -> &mut Option<OneOrMany<AnyBase>> {
        self.inner.origin_field_mut()
    }
}

impl<Inner> AsQuestion for ApObject<Inner>
where
    Inner: AsQuestion,
{
    fn question_ref(&self) -> &Question {
        self.inner.question_ref()
    }

    fn question_mut(&mut self) -> &mut Question {
        self.inner.question_mut()
    }
}

impl<T, Kind> ActivityExt<Kind> for T where T: AsActivity<Kind> {}
impl<T> ActorAndObjectRefExt for T where T: ActorAndObjectRef {}
impl<T> TargetRefExt for T where T: TargetRef {}
impl<T> OriginRefExt for T where T: OriginRef {}
impl<T> OptTargetRefExt for T where T: OptTargetRef {}
impl<T> OptOriginRefExt for T where T: OptOriginRef {}
impl<T> QuestionExt for T where T: AsQuestion {}