'Gets some json from the given host homeserver and path
Args:
url (str): The URL to GET data from.
args (dict): A dictionary used to create query strings, defaults to
None.
**Note**: The value of each key is assumed to be an iterable
and *not* a string.
Returns:
Deferred: Succeeds when we get a 2xx HTTP response. The result
will be the decoded JSON body.'

def get_json(self, url, args=None):

    pass
