text_encoder (`CLIPTextModel`):
The decoder text encoder to be used for text inputs.
decoder (`StableCascadeUNet`):
The decoder model to be used for decoder image generation pipeline.
scheduler (`DDPMWuerstchenScheduler`):
The scheduler to be used for decoder image generation pipeline.
vqgan (`PaellaVQModel`):
The VQGAN model to be used for decoder image generation pipeline.
feature_extractor ([`~transformers.CLIPImageProcessor`]):