@dispatch(Expr)
def _lean(expr, fields=None):
    raise NotImplementedError()
Testing the Fedora Hosted repository field values for Git
dataset/ETHPy150Open blaze/blaze/blaze/expr/optimize.py/_lean--crossover with--dataset/ETHPy150Open reviewboard/reviewboard/reviewboard/hostingsvcs/tests/test_fedora_hosted.py/FedoraHosted.test_repo_field_values_git