gemini-3-pro-image 对imagesize 和 aspectRatio 的支持

	{
		"contents": [
			{
				"role": "user",
				"parts": [
					{
						"text": "two dogs"
					}
				]
			}
		],
		"generationConfig": {
		  "responseModalities": ["TEXT", "IMAGE"],
		  "imageConfig": {"aspectRatio": "16:9", "imageSize": "4K"}
		}
	}

	curl --location 'https://aitoo.cc/v1beta/models/gemini-3-pro-image-preview:generateContent?key=sk-' \
	--header 'Authorization: Bearer sk-' \
	--header 'Content-Type: application/json' \
	--data '{
		"contents": [
			{
				"role": "user",
				"parts": [
					{
						"text": "two dogs"
					}
				]
			}
		],
		"generationConfig": {
		  "responseModalities": ["TEXT", "IMAGE"],
		  "imageConfig": {"aspectRatio": "16:9", "imageSize": "4k"}
		}
	}'