def METHOD_NAME(self):
    self.canceller = FailingBuildsetCanceller('canceller', [
        (['builder2'], ['builder1', 'builder2', 'builder3'],
         SourceStampFilter(branch_eq=['branch1'])),
    ])
    yield self.canceller.setServiceParent(self.master)
    yield self.send_build_finished(500, FAILURE)
    self.assert_cancelled([])