function versionSelected(oEvent) {
		var oVersionsBindingContext = oEvent.getSource().getBindingContext("versions");
		var sVersion = Version.Number.Original;

		if (oVersionsBindingContext) {
			// the original Version does not have a version binding Context
			sVersion = oVersionsBindingContext.getProperty("version");
		}

		this.getToolbar().fireEvent("switchVersion", {version: sVersion});
	}
Controller for the <code>sap.ui.rta.toolbar.versioning.Versioning</code> controls.
Contains implementation of versioning functionality.

@class

@author SAP SE
@version ${version}

@constructor
@private
@since 1.103
@alias sap.ui.rta.toolbar.versioning.Versioning