# `JniEnv` attached to the calling thread
	#
	# A null pointer is returned if the calling thread is not attached to the JVM.
	fun env: JniEnv import jni_error `{
		JNIEnv *env;
		int res = (*self)->GetEnv(self, (void **)&env, JNI_VERSION_1_6);
		if (res == JNI_EDETACHED) {
			JavaVM_jni_error(NULL, "Requesting JNIEnv from an unattached thread", res);
			return NULL;
		}
		else if (res != JNI_OK) {
			JavaVM_jni_error(NULL, "Could not get JNIEnv from Java VM", res);
			return NULL;
		}
		return env;
	`}