public function relation()
    {
        if (is_null($this->relation)) {
            $this->relation = new Relation($this->accessToken);
        }

        return $this->relation;
    }
public function relation()
    {
        if (is_null($this->relation)) {
            $this->relation = new Relation($this->accessToken);
        }

        return $this->relation;
    }
Return the relation instance.

@return \EasyWeChat\ShakeAround\Relation