Prior to this change, the IdPathProvider implementation would be
responsible for exiting the process on insufficient / wrong arguments.
However, such error handling should be performed together with the
business logic and not in CLI-parsing related code.
This change introduces a clear separation: both parsing errors and
insufficient id path arguments can now be return from inside the
`get_ids`-method, and get passed up to the application logic to be
handled.
This change is reflected in all instances of IdPathProvider and their
surrounding code.
Signed-off-by: Leon Schuermann <leon.git@is.currently.online>
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
