#### windows::basic_random_access_handle::read_some_at

Read some data from the handle at the specified offset.

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

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