You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: mne_rt_data_client.m
    path of file: ./repos/fieldtrip/external/mne
    
    the code of the file until where you have to start completion: classdef mne_rt_data_client < mne_rt_client
    %MNE_RT_DATA_CLIENT is a class to parse incomming fiff data tags send 
    % by mne_rt_server using the fiff data port
    %
    %   This class is inherited of mne_rt_client.
    %
    %   Author : Christoph Dinh, Matti Hamalainen, MGH Martinos Center
    %   License : BSD 3-clause
    %
    properties
        m_clientID = -1; % The client ID assigned by mne_rt_server
    end
    
    methods
        % =================================================================
        %% mne_rt_data_client
        function obj = mne_rt_data_client(host, port, numOfRetries)
            %
            % obj = mne_rt_data_client(h
    
function sendFiffCommand(p_DataOutputStream, p_Cmd, p_data)
            %
            % sendFiffCommand(p_DataOutputStream, p_Cmd, p_data)
            %
            % sends a fiff encoded command to mne_rt_server using the fiff
            % data port
            % command and data are encoded into the fiff tag data
            %
            % p_DataOutputStream - open output data stream
            % p_Cmd              - command to send
            % p_data             - data which should be also encoded
            %

            %
            %   Author : Christoph Dinh, Matti Hamalainen, MGH Martinos Center
            %   License : BSD 3-clause
            %

            import java.net.Socket
            import java.io.*
            
            global FIFF;
            if isempty(FIFF)
                FIFF = fiff_define_constants();
            end