Function init

include/pybind11/pybind11.h:2898–2900

/// Binds an existing constructor taking arguments Args...
template <typename... Args>
detail::initimpl::constructor<Args...> init() {
    return {};
}
/// Like `init<Args...>()`, but the instance is always constructed through the alias class (even
/// when not inheriting on the Python side).
template <typename... Args>