code: function(oEvent) {
  			if (bInteractionActive) {
  				// notify for a newly started interaction, but not more often than every 250ms.
  				if (!iScrollEventDelayId) {
  					Interaction.notifyEventStart(oEvent);
  				} else {
  					clearTimeout(iScrollEventDelayId);
  				}
  				iScrollEventDelayId = setTimeout(function(){
  					Interaction.notifyStepStart();
  					iScrollEventDelayId = 0;
  				}, 250);
  			}
  		}
docs: This method notifies if a scroll event has been triggered. Some controls require this special treatment,
  as the generic detection process via notifyEventStart is not sufficient.
  
  @param {Event} oEvent Scroll event whose processing has started
  @static
  @private