public function filter(ServiceDefinition $input) : bool
    {
        if (empty($this->tag)) {
            return false;
        }

        return $input->hasTag($this->tag);
    }
public function filter(ServiceDefinition $input) : bool
    {
        if (empty($this->tag)) {
            return false;
        }

        return $input->hasTag($this->tag);
    }
@param ServiceDefinition $input

@return bool