Add tensor 't' to 'named_tensors' at 'path'. A path may be a name or a path into a NestedMap. For instance, StoreTensor('a.b.c', [1]), is equivalent to this: {'a', {'b': {'c': [1]}}. NestedMaps will be created if they do not already exist, or modified if they do exist. However,
(self, path, tensor)
source not stored for this graph (policy: none)