label.setLayoutData(gridData);
label.setText(getLabelText(paramDef));
Text textInput = new Text(clientArea, SWT.BORDER);
textInput.setData(paramDef.name);
textInput.addFocusListener(new FocusAdapter() {
@Override
public void focusGained(FocusEvent e) {
setErrorMessage(null);
setMessage(paramDef.help != null ? paramDef.help : "");
}