def METHOD_NAME(self):
    data_object = 'non_existent_data_object'
    # Show that without the force flag, removing a non-existent data object
    # results in an error.
    self.user.assert_icommand(['irm', data_object], 'STDERR', ['does not exist'])
    # Show that using the force flag does not result in an error when given a
    # non-existent data object.
    self.user.assert_icommand(['irm', '-f', data_object])