def set_total(self, sum_value):
    'This is an example of how a subclass would implement a direct setter.\n\n    Args:\n      sum_value: The total to set.\n    '
    self.sum.assign(sum_value)
This is an example of how a subclass would implement a direct setter.

Args:
  sum_value: The total to set.
def set_total(self, sum_value):
    'This is an example of how a subclass would implement a direct setter.\n\n    Args:\n      sum_value: The total to set.\n    '
    self.sum.assign(sum_value)