docs: def alias_bank(self, bank_id, alias_id):
          """Adds an ``Id`` to a ``Bank`` for the purpose of creating compatibility.
  
          The primary ``Id`` of the ``Bank`` is determined by the
          provider. The new ``Id`` is an alias to the primary ``Id``. If
          the alias is a pointer to another bank, it is reassigned to the
          given bank ``Id``.
  
          arg:    bank_id (osid.id.Id): the ``Id`` of a ``Bank``
          arg:    alias_id (osid.id.Id): the alias ``Id``
          raise:  AlreadyExists - ``alias_id`` is in use as a primary
                  ``Id``
          raise:  NotFound - ``bank_id`` not found
          raise:  NullArgument - ``bank_id`` or ``alias_id`` is ``null``
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure occurred
          *compliance: mandatory -- This method must be implemented.*
  
          """
          # Implemented from template for
          # osid.resource.BinLookupSession.alias_bin_template
          if self._catalog_session is not None:
              return self._catalog_session.alias_catalog(catalog_id=bank_id, alias_id=alias_id)
          self._alias_id(primary_id=bank_id, equivalent_id=alias_id)