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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

async def update(self, fields=''):
    '''reload object info from emby

    |coro|

    Parameters
    ----------
    fields : str
      additional fields to request when updating

    See Also
    --------
      refresh : same thing
      send :
      post :
    '''
    path = 'Users/{{UserId}}/Items/{}'.format(self.id)
    info = await self.connector.getJson(path,
                                        remote=False,
                                        Fields='Path,Overview,'+fields
    )
    self.object_dict.update(info)
    self.extras = {}
    return self