nary that if specified is passed along to the AttnProcessor.   Returns 
~models.unet_3d_condition.UNet3DConditionOutput or tuple
  
If return_dict is True, an ~models.unet_3d_condition.UNet3DConditionOutput is returned, otherwise
a tuple is returned where the first element is the sample tensor.
  The UNet3DConditionModel forward method.  fuse_qkv_projections  < source > ( )    Enables fused QKV projections. For self-attention modules, all proje