HandleStringResult
Handles a Route.Result.Data matching a String Requires that the Route.Result.Data.bundle is described by a SingleValueNavigationSpec matching NavigationBundleSpecType.StringType
Parameters
retain
If true the result will be retained in the NavBackStackEntry. It will be deleted otherwise.
onResult
Method for handling the received String
Throws
if the Bundle is not associated with a SingleValueNavigationSpec matching NavigationBundleSpecType.StringType.