Method is

imperative/src/include/megbrain/imperative/value.h:188–190

    template <typename TValue>
    inline std::enable_if_t<TValue::is_primitive, bool> is() const {
        return is(PrimitiveType<TValue>::instance);
    }

    template <typename TValue>
    inline std::enable_if_t<TValue::is_primitive, const TValue*> as() const {