protected function is_internal_meta_key( $key ) {
		$internal_meta_key = ! empty( $key ) && $this->data_store && in_array( $key, $this->data_store->get_internal_meta_keys(), true );

		if ( ! $internal_meta_key ) {
			return false;
		}

		$has_setter_or_getter = is_callable( array( $this, 'set_' . $key ) ) || is_callable( array( $this, 'get_' . $key ) );

		if ( ! $has_setter_or_getter ) {
			return false;
		}
		/* translators: %s: $key Key to check */
		wc_doing_it_wrong( __FUNCTION__, sprintf( __( 'Generic add/update/get meta methods should not be used for internal meta data, including "%s". Use getters and setters.', 'woocommerce' ), $key ), '3.2.0' );

		return true;
	}