public function getDefault($entity, $name) {
		if($this->get('many'))
			return new ManyCollection($entity, $name);
		elseif(isset($this->params['default'])) {
			if(is_callable($this->params['default']))
				return $this->params['default']();
			else
				return $this->params['default'];
		}
		else
			return $this->_getDefault($entity);
	}