protected function defineStubAttrs() {
		$params = $this->description->actions->{$this->action->name()}->input->parameters;
		
		foreach($params as $name => $desc) {
			switch($desc->type) {
				case 'Resource':
					$c = new \stdClass();
					$c->{$desc->value_id} = null;
					$c->{$desc->value_label} = null;
					
					$this->attrs[$name] = $c;
					break;
				
				default:
					$this->attrs[$name] = null;
			}
		}
	}