Construct a windows::basic_handle without opening it.

explicit basic_handle(
    boost::asio::io_service & io_service);
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Construct a windows::basic_handle on an existing native handle.

basic_handle(
    boost::asio::io_service & io_service,
    const native_handle_type & handle);
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Move-construct a windows::basic_handle from another.

basic_handle(
    basic_handle && other);
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