BP_REST_Friends_Endpoint::get_endpoint_args_for_item_schema( string $method = WP_REST_Server::CREATABLE )

	public function get_endpoint_args_for_item_schema( $method = WP_REST_Server::CREATABLE ) {
		$args = WP_REST_Controller::get_endpoint_args_for_item_schema( $method );
		$key  = 'get_item';

		if ( WP_REST_Server::EDITABLE === $method ) {
			$key = 'update_item';
		} elseif ( WP_REST_Server::CREATABLE === $method ) {
			$key = 'create_item';

			// Remothe the ID for POST requests.
			unset( $args['id'] );

			// Those fields are required.
			$args['initiator_id']['required'] = true;
			$args['friend_id']['required']    = true;

			// This one is optional.
			$args['force'] = array(
				'description'       => __( 'Whether to force friendship acceptance.', 'buddyboss' ),
				'default'           => false,
				'type'              => 'boolean',
				'sanitize_callback' => 'rest_sanitize_boolean',
				'validate_callback' => 'rest_validate_request_arg',
			);

		} elseif ( WP_REST_Server::DELETABLE === $method ) {
			$key = 'delete_item';
			unset( $args['id'] );
			unset( $args['initiator_id'] );
			$args['friend_id']['required'] = true;
		}

		/**
		 * Filters the method query arguments.
		 *
		 * @param array  $args   Query arguments.
		 * @param string $method HTTP method of the request.
		 *
		 * @since 0.1.0
		 */
		return apply_filters( "bp_rest_friends_{$key}_query_arguments", $args, $method );
	}