code: function (oTree) {
  			var sDebugString = this.toDebugInfo(oTree);
  
  			if (sDebugString === true) {
  				return 1;
  			} else if (sDebugString) {
  				return sDebugString.split(",").length;
  			}
  			return 0;
  		}
docs: Calculates the number of currently selected debug modules
  @param {object} oTree The tree to be analyzed
  @return {int} The amount of selected tree nodes