code: function(sLayer, sCurrentLayer) {
  			var sCurrent = sCurrentLayer || Utils.getCurrentLayer(false);
  			// If sLayer is undefined, it is assumed it be on the lowest layer
  			if ((this.getLayerIndex(sCurrent) > this.getLayerIndex(sLayer)) || !sLayer) {
  				return -1;
  			} else if (this.getLayerIndex(sCurrent) === this.getLayerIndex(sLayer)) {
  				return 0;
  			} else {
  				return 1;
  			}
  		}
docs: Compares current layer with a provided layer
  -1: Lower layer, 0: Same layer, 1: Layer above
  
  @param {String} sLayer - Layer name to be evaluated
  @param {String} [sCurrentLayer] - Current layer name to be evaluated, if not provided the layer is taken from URL parameter
  @returns {int} -1: Lower layer, 0: Same layer, 1: Layer above
  @public
  @function
  @name sap.ui.fl.Utils.isLayerOverCurrentLayer