getCookie
root = (jlong) lgrp_root(getCookie(env, clazz, obj));
cookie = getCookie(env, (*env)->GetObjectClass(env, domain), domain);
cookie = getCookie(env, (*env)->GetObjectClass(env, domain), domain);
static lgrp_cookie_t getCookie(JNIEnv *, jclass, jobject);
return ((jint)lgrp_fini(getCookie(env, clazz, obj)));