public function get_item_permissions_check( $request ) {
		$retval = true;

		if ( ! is_user_logged_in() ) {
			$retval = new WP_Error(
				'bp_rest_authorization_required',
				__( 'Sorry, you are not allowed to see the notification.', 'buddypress' ),
				array(
					'status' => rest_authorization_required_code(),
				)
			);
		}

		$notification = $this->get_notification_object( $request );

		if ( true === $retval && is_null( $notification->item_id ) ) {
			$retval = new WP_Error(
				'bp_rest_notification_invalid_id',
				__( 'Invalid notification ID.', 'buddypress' ),
				array(
					'status' => 404,
				)
			);
		}

		if ( true === $retval && ! $this->can_see( $notification->id ) ) {
			$retval = new WP_Error(
				'bp_rest_authorization_required',
				__( 'Sorry, you cannot view this notification.', 'buddypress' ),
				array(
					'status' => rest_authorization_required_code(),
				)
			);
		}

		/**
		 * Filter the notifications `get_item` permissions check.
		 *
		 * @since 5.0.0
		 *
		 * @param bool|WP_Error   $retval  Returned value.
		 * @param WP_REST_Request $request The request sent to the API.
		 */
		return apply_filters( 'bp_rest_notifications_get_item_permissions_check', $retval, $request );
	}