in cxx/fbjni/detail/Meta-inl.h [253:262]
local_ref<JniRet> operator()(alias_ref<jobject> self, alias_ref<jclass> cls, Args... args) const {
const auto env = Environment::current();
auto result = env->CallNonvirtualObjectMethod(
self.get(),
cls.get(),
getId(),
detail::callToJni(detail::Convert<typename std::decay<Args>::type>::toCall(args))...);
FACEBOOK_JNI_THROW_PENDING_EXCEPTION();
return adopt_local(static_cast<JniType<JniRet>>(result));
}