The model can be loaded with the following code snippet.
from diffusers import QwenImageTransformer2DModel
transformer = QwenImageTransformer2DModel.from_pretrained("Qwen/QwenImage-20B", subfolder="transformer", torch_dtype=torch.bfloat16)
[[autodoc]] QwenImageTransformer2DModel
[[autodoc]] models.modeling_outputs.Transformer2DModelOutput