Combines a Shared Model with a Translations Model by taking
the Translations Model and setting it onto the
Shared Model‘s translations cache.
Returns the cached translation from an instance or None.
Returns a manager for a normal model that is aware of translations and can
filter over translated fields on translated models related to this normal
Smart version of the standard get_field_by_name() on the options
(meta) of Django models that raises a more useful exception when one tries
to access translated fields with the wrong manager.
__call__(self, meta, name)
Returns the field from the Shared Model or
Translations Model, if it is on either.