def ToFieldMask(self, field_mask):
    field_mask.Clear()
    _AddFieldPaths(self._root, '', field_mask)
Converts the tree to a FieldMask.
dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/net/proto2/python/internal/well_known_types.py/_FieldMaskTree.ToFieldMask