herwise a tuple is
returned where the first element is the sample tensor.
  The ControlNetModel forward method.  from_unet  < source > ( unet: UNet2DConditionModel controlnet_conditioning_channel_order: str = 'rgb' conditioning_embedding_out_channels: Optional = (16, 32, 96, 256) load_weights_from_unet: bool = True conditioning_channels: int = 3  )   Parameters   unet (UNet2DConditionModel) —
The UNet model weights to copy to the ControlNetMode