update_multi_meta_value example

$is_valid = rest_validate_value_from_schema( $value, $args['schema'], 'meta.' . $name );
            if ( is_wp_error( $is_valid ) ) {
                $is_valid->add_data( array( 'status' => 400 ) );
                return $is_valid;
            }

            $value = rest_sanitize_value_from_schema( $value, $args['schema'] );

            if ( $args['single'] ) {
                $result = $this->update_meta_value( $object_id, $meta_key, $name, $value );
            } else {
                $result = $this->update_multi_meta_value( $object_id, $meta_key, $name, $value );
            }

            if ( is_wp_error( $result ) ) {
                return $result;
            }
        }

        return null;
    }

    /** * Deletes a meta value for an object. * * @since 4.7.0 * * @param int $object_id Object ID the field belongs to. * @param string $meta_key Key for the field. * @param string $name Name for the field that is exposed in the REST API. * @return true|WP_Error True if meta field is deleted, WP_Error otherwise. */