code: private AFTPClient actionOpen() throws IOException, PageException {
  	required("server", server);
  	required("username", username);
  	// required("password", password);
  
  	AFTPClient client = getClient();
  	writeCfftp(client);
  	return client;
      }
docs: Opens a FTP Connection
  
  @return FTPCLinet
  @throws IOException
  @throws PageException