docs: def alias_grade_entry(self, grade_entry_id, alias_id):
          """Adds an ``Id`` to a ``GradeEntry`` for the purpose of creating compatibility.
  
          The primary ``Id`` of the ``GradeEntry`` is determined by the
          provider. The new ``Id`` performs as an alias to the primary
          ``Id``. If the alias is a pointer to another grade entry, it is
          reassigned to the given grade entry ``Id``.
  
          arg:    grade_entry_id (osid.id.Id): the ``Id`` of a
                  ``GradeEntry``
          arg:    alias_id (osid.id.Id): the alias ``Id``
          raise:  AlreadyExists - ``alias_id`` is already assigned
          raise:  NotFound - ``grade_entry_id`` not found
          raise:  NullArgument - ``grade_entry_id`` or ``alias_id`` is
                  ``null``
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure
          *compliance: mandatory -- This method must be implemented.*
  
          """
          # Implemented from template for
          # osid.resource.ResourceAdminSession.alias_resources_template
          self._alias_id(primary_id=grade_entry_id, equivalent_id=alias_id)