def CanonicalFormFromMask(self, mask):
    tree = _FieldMaskTree(mask)
    tree.ToFieldMask(self)
Test when only one inputs have two broadcastable dimension at each ends
dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/net/proto2/python/internal/well_known_types.py/FieldMask.CanonicalFormFromMask--crossover with--dataset/ETHPy150Open rizar/attention-lvcsr/libs/Theano/theano/sandbox/cuda/tests/test_basic_ops.py/test_elemwise_collapse3