docs: def contribute_to_class(self, cls, name):
          """
          Because django doesn't give us a nice way to provide
          a through table without losing functionality. We have to
          provide our own through table creation that uses the
          FKToVersion field to be used for the from field.
          """
  
          self.update_rel_to(cls)
  
          # Called to get a name
          self.set_attributes_from_name(name)
          self.model = cls
  
          # Set the through field
          if not self.remote_field.through and not cls._meta.abstract:
              self.remote_field.through = create_many_to_many_intermediary_model(
                  self, cls)
  
          # Do the rest
          super(M2MFromVersion, self).contribute_to_class(cls, name)