src/sap.ui.core/src/sap/ui/core/routing/Router.js
function(oData, fnFunction, oListener) {
				this.attachEvent(Router.M_EVENTS.TITLE_CHANGED, oData, fnFunction, oListener);
				return this;
			}
function(oData, fnFunction, oListener) {
				this.attachEvent(Router.M_EVENTS.TITLE_CHANGED, oData, fnFunction, oListener);
				return this;
			}
function ( oData , fnFunction , oListener ) { this . attachEvent ( Router . M_EVENTS . TITLE_CHANGED , oData , fnFunction , oListener ) ; return this ; }
Will be fired when the title of the "TitleTarget" in the currently matching Route has been changed.

<pre>
A "TitleTarget" is resolved as the following:
1. When the Route only has one target configured, the "TitleTarget" is resolved with this target when its {@link sap.ui.core.routing.Targets#constructor|title} options is set.
2. When the Route has more than one target configured, the "TitleTarget" is resolved by default with the first target which has a {@link sap.ui.core.routing.Targets#constructor|title} option.
3. When the {@link sap.ui.core.routing.Route#constructor|titleTarget} option on the Route is configured, this specific target is then used as the "TitleTarget".
</pre>

@name sap.ui.core.routing.Router#titleChanged
@event
@param {object} oEvent
@param {sap.ui.base.EventProvider} oEvent.getSource
@param {object} oEvent.getParameters
@param {string} oEvent.getParameters.title The current displayed title
@param {array} oEvent.getParameters.history An array which contains the history of previous titles
@param {string} oEvent.getParameters.history.title The title
@param {string} oEvent.getParameters.history.hash The hash
@param {boolean} oEvent.getParameters.history.isHome The app home indicator
@public
 
Attach event-handler <code>fnFunction</code> to the 'titleChanged' event of this <code>sap.ui.core.routing.Router</code>.<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.

@return {sap.ui.core.routing.Router} <code>this</code> to allow method chaining
@public
Will be fired when the title of the TitleTarget in the currently matching Route has been changed .