code: @SuppressWarnings("unchecked")
  	private JComboBox<HandleParametersOption> getComboHandleParameters() {
  		if (handleParameters == null) {
  			handleParameters = new JComboBox<>(new HandleParametersOption[] {
  					HandleParametersOption.USE_ALL, HandleParametersOption.IGNORE_VALUE,
  					HandleParametersOption.IGNORE_COMPLETELY });
  			handleParameters.setRenderer(new HandleParametersOptionRenderer());
  		}
  		return handleParameters;
  	}
docs: This method initializes the combobox for HandleParameters option.
  
  @return the combo handle parameters