public function create_item( $request ) {
		// Setting context.
		$request->set_param( 'context', 'edit' );

		// Create the message or the reply.
		$thread_id = messages_new_message( $this->prepare_item_for_database( $request ) );

		// Validate it created a Thread or was added to it.
		if ( false === $thread_id ) {
			return new WP_Error(
				'bp_rest_messages_create_failed',
				__( 'There was an error trying to create the message.', 'buddypress' ),
				array(
					'status' => 500,
				)
			);
		}

		// Make sure to get the newest message to update REST Additional fields.
		$thread        = $this->get_thread_object( $thread_id );
		$last_message  = wp_list_filter( $thread->messages, array( 'id' => $thread->last_message_id ) );
		$last_message  = reset( $last_message );
		$fields_update = $this->update_additional_fields_for_object( $last_message, $request );

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

		$retval = array(
			$this->prepare_response_for_collection(
				$this->prepare_item_for_response( $thread, $request )
			),
		);

		$response = rest_ensure_response( $retval );

		/**
		 * Fires after a message is created via the REST API.
		 *
		 * @since 5.0.0
		 *
		 * @param BP_Messages_Thread $thread  Thread object.
		 * @param WP_REST_Response   $retval  The response data.
		 * @param WP_REST_Request    $request The request sent to the API.
		 */
		do_action( 'bp_rest_messages_create_item', $thread, $response, $request );

		return $response;
	}