Method isNull

framework/foundation/platforms/android/src/java/Reference.cpp:40–43

    }

    bool Reference::isNull() const
    {
        return (_shared == nullptr || (Env::get().getJniEnv()->IsSameObject(_shared->getJObject(), nullptr) != 0u));
    }

    /** Returns true if this reference points to the same object as the
     * other reference.*/