protected function addSingleSelecterElementToForm(Form $form, Property $property) {
		if ($this->toOneElement == $this::REF_ONE_ELEMENT_SELECT) {
			$element = new Select($property->getName());
		} else {
			$element = new Radio($property->getName());
		}
		
		$options = [0 => '-none-'] + $this->getValueOptionsFromEntity($property->getTargetEntity());
		$element->setValueOptions($options);
		
		$element->setLabel($property->getName());
		$form->add($element);
	}