// Create a decorated field with a required field decoration.
DecoratedField methodField = new DecoratedField(nameGroup, SWT.SINGLE | SWT.BORDER,
new TextControlCreator());
FieldDecoration requiredFieldIndicator1 = FieldDecorationRegistry.getDefault()
.getFieldDecoration(FieldDecorationRegistry.DEC_CONTENT_PROPOSAL);
methodField.addFieldDecoration(requiredFieldIndicator1, SWT.TOP | SWT.LEFT, true);
methodText = (Text) methodField.getControl();
data = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
methodField.getLayoutControl().setLayoutData(data);
if (this.action != null && this.action.getMethod() != null) {