Returns the list of indexes that are associated with this schema.
        
        :return     [<orb.Index>, ..]

def indexes(self, recurse=True):
        """
        Returns the list of indexes that are associated with this schema.
        
        :return     [<orb.Index>, ..]
        """
        output = self.__indexes.copy()
        if recurse and self.inherits():
            schema = orb.system.schema(self.inherits())
            if not schema:
                raise orb.errors.ModelNotFound(schema=self.inherits())
            else:
                output.update(schema.indexes(recurse=recurse))
        return output