AI-generated Key Takeaways
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Size represents the dimensions of an AdUnit, LineItem or Creative.
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For specific types of sizes like interstitial, native, ignored, and fluid, Size must be 1x1.
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The Size object includes fields for width, height, and a boolean indicating if it represents an aspect ratio.
 
Represents the dimensions of an AdUnit, LineItem or Creative.
For interstitial size (out-of-page), native, ignored and fluid size, Size must be 1x1.
- Namespace
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https://www.google.com/apis/ads/publisher/v202508 
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                            Whether this size represents an aspect ratio.  |