(self, oneof_group)
Returns the name of the field that is set inside a oneof group, or
    None if no field is set.  If no group with the given name exists, ValueError
    will be raised.
Returns the name of the field that is set inside a oneof group, or
    None if no field is set.  If no group with the given name exists, ValueError
    will be raised.
Returns the name of the field that is set inside a oneof group or None if no field is set . If no group with the given name exists ValueError will be raised .
def WhichOneof(self, oneof_group):
    """Returns the name of the field that is set inside a oneof group, or
    None if no field is set.  If no group with the given name exists, ValueError
    will be raised."""
    raise NotImplementedError
def WhichOneof ( self , oneof_group ) : raise NotImplementedError