Provides access to the Java Native Interface. The JavaClassWrapper singleton provides a way for the Godot application to send and receive data through the [url=https://developer.android.com/training/articles/perf-jni]Java Native Interface[/url] (JNI). [b]Note:[/b] This singleton is only available in Android builds. Wraps a class defined in Java, and returns it as a [JavaClass] [Object] type that Godot can interact with. [b]Note:[/b] This method only works on Android. On every other platform, this method does nothing and returns an empty [JavaClass].