#### windows::basic_random_access_handle::write_some_at

Write some data to the handle at the specified offset.

    template<
        typename ConstBufferSequence>
    std::size_t write_some_at(
        boost::uint64_t offset,
        const ConstBufferSequence & buffers);

    template<
        typename ConstBufferSequence>
    std::size_t write_some_at(
        boost::uint64_t offset,
        const ConstBufferSequence & buffers,
        asio::error_code & ec);