ction", or "simple_projection".   num_class_embeds (int, optional, defaults to None) —
Input dimension of the learnable embedding matrix to be projected to time_embed_dim, when performing
class conditioning with class_embed_type equal to None.   time_embedding_type (str, optional, defaults to positional) —
The type of position embedding to use for timesteps. Choose from positional or fourier.   time_embedding_dim (int, optional, defaults to Non