code: function suppressDefaultAndStopPropagation(oEvent) {
  			var bTargetIsBlockLayer = oEvent.target === this.$blockLayer.get(0),
  				oTabbable;
  
  			if (bTargetIsBlockLayer && oEvent.type === 'keydown' && oEvent.keyCode === 9) {
  				// Special handling for "tab" keydown: redirect to next element before or after busy section
  				Log.debug("Local Busy Indicator Event keydown handled: " + oEvent.type);
  				oTabbable = oEvent.shiftKey ? this.oTabbableBefore : this.oTabbableAfter;
  				oTabbable.setAttribute("tabindex", -1);
  				// ignore execution of focus handler
  				this.bIgnoreFocus = true;
  				oTabbable.focus();
  				this.bIgnoreFocus = false;
  				oTabbable.setAttribute("tabindex", 0);
  				oEvent.stopImmediatePropagation();
  
  			} else if (bTargetIsBlockLayer && (oEvent.type === 'mousedown' || oEvent.type === 'touchstart')) {
  				// Do not "preventDefault" to allow to focus busy indicator
  				Log.debug("Local Busy Indicator click handled on busy area: " + oEvent.target.id);
  				oEvent.stopImmediatePropagation();
  
  			} else {
  				Log.debug("Local Busy Indicator Event Suppressed: " + oEvent.type);
  				oEvent.preventDefault();
  				oEvent.stopImmediatePropagation();
  			}
  		}
docs: Handler which suppresses event bubbling for blocked section
  
  @param {object} oEvent The event on the suppressed DOM
  @private