docs: function sn_api_node_registerUrlHelperFunction(name, func) {
  	if ( typeof func !== 'function' ) {
  		return;
  	}
  	if ( sn_api_node_urlHelperFunctions === undefined ) {
  		sn_api_node_urlHelperFunctions = [];
  	}
  	name = name.replace(/[^0-9a-zA-Z_]/, '');
  	sn_api_node_urlHelperFunctions.push({name : name, func : func});
  }