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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:
 def get_group(self, name, user_name=None):
 """ Get information on the given group or whether or not a user is a member of the group. Args: name (string):
 Name of group to query. user_name (optional[string]):
 Supply None if not interested in determining if user is a member of the given group. Returns: (mixed):
 Dictionary if getting group information or bool if a user name is supplied. Raises: requests.HTTPError on failure. """

        self.project_service.set_auth(self._token_project)
        return self.project_service.get_group(name, user_name)