def yaml(self):
        return yaml.dump(self.serialized, default_flow_style=False,
                         encoding=None)
def step_impl(context):
    data = json.loads(context.text)
    receiver_name = re.match(r"\<(\w+)'s id\>", data['receiver']).group(1)
    data['receiver'] = context.users[receiver_name]['id']
    context.request.add_data(data)