https://developer.android.com/reference/android/support/test/espresso/remote/EspressoRemoteMessage?authuser=7
EspressoRemoteMessage | API reference | Android Developers
api referenceandroiddevelopers
https://developer.android.com/reference/android/support/test/espresso/remote/EspressoRemoteMessage.From?authuser=1
EspressoRemoteMessage.From | API reference | Android Developers
api referenceandroiddevelopers