def touch(self, dst, label=None):
    dst = self._normalize(dst)
    self._tag(dst, label)
    touch(os.path.join(self.chroot, dst))
Hook to do set additional or alter additional field values
dataset/ETHPy150Open pantsbuild/pex/pex/common.py/Chroot.touch--crossover with--dataset/ETHPy150Open openelections/openelections-core/openelex/us/wa/transform/__init__.py/CreateResultsTransform._alter_result_fields