Note: C:\Tools\flutter_windows_v1.0.0-stable\flutter.pub-cache\hosted\pub.dartlang.org\firebase_core-0.3.1+1\android\src\main\java\io\flutter\plugins\firebase\core\FirebaseCorePlugin.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.