def ClearField(self, field_name):
    'Clears the contents of a given field.\n\n    Inside a oneof group, clears the field set. If the name neither refers to a\n    defined field or oneof group, :exc:`ValueError` is raised.\n\n    Args:\n      field_name (str): The name of the field to check for presence.\n\n    Raises:\n      ValueError: if the `field_name` is not a member of this message.\n    '
    raise NotImplementedError
Clears the contents of a given field.

Inside a oneof group, clears the field set. If the name neither refers to a
defined field or oneof group, :exc:`ValueError` is raised.

Args:
  field_name (str): The name of the field to check for presence.

Raises:
  ValueError: if the `field_name` is not a member of this message.
def ClearField(self, field_name):
    'Clears the contents of a given field.\n\n    Inside a oneof group, clears the field set. If the name neither refers to a\n    defined field or oneof group, :exc:`ValueError` is raised.\n\n    Args:\n      field_name (str): The name of the field to check for presence.\n\n    Raises:\n      ValueError: if the `field_name` is not a member of this message.\n    '
    raise NotImplementedError