code: public Reply site(String args) throws IOException, ServerException {
          Command cmd = new Command("SITE", args);
          return doCommand(cmd);
      }
docs: Executes site-specific operation (using the SITE command).
  
  <br><b>Note</b>: <i>This is potentially dangerous operation.
  Depending on the command executed it might put the server in a
  different state from the state the client is expecting.</i>
  
  @param args parameters for the SITE operation.
  @exception IOException in case of I/O error
  @exception ServerException if operation failed.
  @return the Reply to the operation.