code: protected String constructSecurityControllerId(String commandFaceId) {
  		String id = null;
  		String formModelId = getFormModel().getId();
  
  		if (commandFaceId != null) {
  			id = (formModelId != null) ? formModelId + "." + commandFaceId : commandFaceId;
  		}
  		return id;
  	}
docs: Construct a default security controller Id for a given command face id.
  The id will be a combination of the form model id, if any, and the face
  id.
  <p>
  <code>[formModel.id] + "." + [commandFaceId]</code> if the form model
  id is not null.
  <p>
  <code>[commandFaceId]</code> if the form model is null.
  <p>
  <code>null</code> if the commandFaceId is null.
  @param commandFaceId
  @return default security controller id