# Attach the calling thread to the JVM and return its `JniEnv`
	fun attach_current_thread: JniEnv import jni_error `{
		JNIEnv *env;
	#ifdef ANDROID
		// the signature is different (better actually) on Android
		int res = (*self)->AttachCurrentThread(self, &env, NULL);
	#else
		int res = (*self)->AttachCurrentThread(self, (void**)&env, NULL);
	#endif
		if (res != JNI_OK) {
			JavaVM_jni_error(NULL, "Could not attach current thread to Java VM", res);
			return NULL;
		}
		return env;
	`}