def add_validation(self, *validators):
        for v in validators:
            self._validators[v.__name__] = v
Response should look like:
dataset/ETHPy150Open openelections/openelections-core/openelex/base/transform.py/Transform.add_validation--crossover with--dataset/ETHPy150Open associatedpress/geomancer/geomancer/mancers/census_reporter.py/CensusReporter.search