OptionalaspectAspect ratio of the generated images. Supported values are "1:1", "2:3", "3:2", "3:4", "4:3", "9:16", "16:9", and "21:9".
OptionalimageOptional. Specifies the size of generated images. Supported
values are 1K, 2K, 4K. If not specified, the model will use default
value 1K.
The image generation configuration to be used in GenerateContentConfig.