-record(open_data_command, {
    command_str :: binary(),
    expected_statuses :: list(gftp@status:status()),
    caller :: gleam@erlang@process:pid_(),
    reply :: gleam@erlang@process:subject({ok,
            {gftp@stream:data_stream(), gftp@response:response()}} |
        {error, gftp@result:ftp_error()})
}).