Fill in default values for grad_ys. Args: grad_ys: List of gradients, can contain None. ys: List of tensors. colocate_gradients_with_ops: If True, try colocating gradients with the corresponding op. gradient_uid: A unique identifier within the graph indicating which in
(grad_ys,
ys,
colocate_gradients_with_ops,
gradient_uid="__unsupported__")
source not stored for this graph (policy: none)
no test coverage detected