<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _fetch_json(self):
 """Returns the json representation of the dep graph"""

        print("Fetching from url: " + self.graph_url)
        resp = urlopen(self.graph_url).read()
        return json.loads(resp.decode('utf-8'))