Bound additional methods to current instance

        :param class meta: information from Meta class used to configure the data layer instance

def bound_rewritable_methods(self, methods):
        """Bound additional methods to current instance

        :param class meta: information from Meta class used to configure the data layer instance
        """
        for key, value in methods.items():
            if key in self.REWRITABLE_METHODS:
                setattr(self, key, types.MethodType(value, self))