def _uniqueTests(self, things):
        entries = []
        for thing in things:
            if isinstance(thing, types.MethodType):
                entries.append((thing, thing.im_class))
            else:
                entries.append((thing,))
        return [entry[0] for entry in set(entries)]
Gather unique suite objects from loaded things. This will guarantee
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/trial/runner.py/TestLoader._uniqueTests