DoubaoImageRequest

Seedream image generation request in Ark format.

Fields match the Ark API and are forwarded unchanged, with the exceptions
listed per field below.

{
    "model": "doubao-seedream-5-0-pro-260628",
    "prompt": "A girl and a cow plush toy riding a roller coaster, morning, noon and evening",
    "image": [
        "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
        "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_2.png"
    ],
    "size": "2K",
    "response_format": "url",
    "watermark": false
}