ts to None) —
Optional activation function to use only once on the time embeddings before they are passed to the rest of
the UNet. Choose from silu, mish, gelu, and swish.   timestep_post_act (str, optional, defaults to None) —
The second activation function to use in timestep embedding. Choose from silu, mish and gelu.   time_cond_proj_dim (int, optional, defaults to None) —
The dimension of cond_proj layer in the timestep embedding.   conv_in