src/sap.ui.core/src/sap/ui/core/routing/Router.js
function(oData, fnFunction, oListener) {
				return this.attachEvent(Router.M_EVENTS.BYPASSED, oData, fnFunction, oListener);
			}
function(oData, fnFunction, oListener) {
				return this.attachEvent(Router.M_EVENTS.BYPASSED, oData, fnFunction, oListener);
			}
function ( oData , fnFunction , oListener ) { return this . attachEvent ( Router . M_EVENTS . BYPASSED , oData , fnFunction , oListener ) ; }
The 'bypassed' event is fired, when no route of the router matches the changed URL hash

@name sap.ui.core.routing.Router#bypassed
@event
@param {sap.ui.base.Event} oEvent
@param {sap.ui.base.EventProvider} oEvent.getSource
@param {object} oEvent.getParameters
@param {string} oEvent.getParameters.hash the current URL hash which did not match any route
@public
 
Attach event-handler <code>fnFunction</code> to the 'bypassed' event of this <code>sap.ui.core.routing.Router</code>.<br/>
The event will get fired, if none of the routes of the routes is matching. <br/>

@param {object} [oData] The object, that should be passed along with the event-object when firing the event.
@param {function} fnFunction The function to call, when the event occurs. This function will be called on the
oListener-instance (if present) or in a 'static way'.
@param {object} [oListener] Object on which to call the given function. If empty, this router is used.

@return {sap.ui.core.routing.Router} <code>this</code> to allow method chaining
@public
The bypassed event is fired when no route of the router matches the changed URL hash