docs: def get_repository(self, repository_id=None):
          """Gets the ``Repository`` specified by its ``Id``.
  
          In plenary mode, the exact ``Id`` is found or a ``NotFound``
          results. Otherwise, the returned ``Repository`` may have a
          different ``Id`` than requested, such as the case where a
          duplicate ``Id`` was assigned to a ``Repository`` and retained
          for compatibility.
  
          arg:    repository_id (osid.id.Id): ``Id`` of the ``Repository``
          return: (osid.repository.Repository) - the repository
          raise:  NotFound - ``repository_id`` not found
          raise:  NullArgument - ``repository_id`` is ``null``
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure
          *compliance: mandatory -- This method is must be implemented.*
  
          """
          # Implemented from awsosid template for -
          # osid.resource.BinLookupSession.get_bin_template
          if not self._can('lookup'):
              raise PermissionDenied()
          else:
              return self._provider_session.get_repository(repository_id)