d_type equal to None.


time_embedding_type (str, optional, default to positional) —
The type of position embedding to use for timesteps. Choose from positional or fourier.


time_embedding_dim (int, optional, default to None) —
An optional override for the dimension of the projected time embedding.


time_embedding_act_fn (str, optional, default to None) —
Optional activation function to use on the time embeddings only one time before they as 