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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, group_id):
 """ Get group for the provided group ID. Args: group_id: Group ID for which group is to be determined. Returns: Group corresponding to the provided group ID. """


    group = self.group_id_map.get(group_id)

    if group:
      return group

    self.logger.error('Group ID "%s" is not in datafile.' % group_id)
    self.error_handler.handle_error(exceptions.InvalidGroupException(enums.Errors.INVALID_GROUP_ID_ERROR))
    return None