rest_api_default_filters() WordPress Function

function rest_api_default_filters() {
	if ( defined( 'REST_REQUEST' ) && REST_REQUEST ) {
		// Deprecated reporting.
		add_action( 'deprecated_function_run', 'rest_handle_deprecated_function', 10, 3 );
		add_filter( 'deprecated_function_trigger_error', '__return_false' );
		add_action( 'deprecated_argument_run', 'rest_handle_deprecated_argument', 10, 3 );
		add_filter( 'deprecated_argument_trigger_error', '__return_false' );
		add_action( 'doing_it_wrong_run', 'rest_handle_doing_it_wrong', 10, 3 );
		add_filter( 'doing_it_wrong_trigger_error', '__return_false' );
	}

	// Default serving.
	add_filter( 'rest_pre_serve_request', 'rest_send_cors_headers' );
	add_filter( 'rest_post_dispatch', 'rest_send_allow_header', 10, 3 );
	add_filter( 'rest_post_dispatch', 'rest_filter_response_fields', 10, 3 );

	add_filter( 'rest_pre_dispatch', 'rest_handle_options_request', 10, 3 );
	add_filter( 'rest_index', 'rest_add_application_passwords_to_index' );
}