code: function (oTree, sSeparator) {
  			var oObject = this.toHierarchy(oTree),
  				aFilters = [];
  
  			function collect(sName, oObject) {
  				var aChildren, bChildren;
  				if (typeof oObject === 'object') {
  					if (oObject['']) {
  						aFilters.push(sName + '/');
  						return;
  					}
  					aChildren = Object.keys(oObject);
  					bChildren = aChildren.length;
  				}
  				if (bChildren) {
  					aChildren.forEach(function (sChild) {
  						if (sChild === '') {
  							return;
  						}
  						if (oObject[sChild] === true) {
  							aFilters.push((sName ? sName + '/' : '') + sChild);
  						} else if (typeof oObject[sChild] === 'object') {
  							collect((sName ? sName + '/' : '') + sChild, oObject[sChild]);
  						}
  					});
  				}
  			}
  
  			if (this.get(oObject, '/')) {
  				return true;
  			}
  
  			collect('', oObject);
  
  			return (aFilters.length > 0 ? aFilters.join(sSeparator || ',') : false);
  		}
docs: Converts a bindable tree structure to a valid value for sap-ui-debug
  @param {object} oTree The tree to be converted
  @param {string} sSeparator=, A separator character, default is a comma
  @return {string} The tree selection represented as string