Changes to GET /v4/advertisers/:advertiserId/adGroupAds/:adGroupAdId

removed the media type */* for the response with the status 200

the response optional property audioAd/video/unavailableReason became read-only for the status 200

the response optional property bumperAd/commonInStreamAttribute/trackingUrl became read-only for the status 200

the response optional property bumperAd/commonInStreamAttribute/video/unavailableReason became read-only for the status 200

the response optional property demandGenVideoAd/videos/items/unavailableReason became read-only for the status 200

the response optional property inStreamAd/commonInStreamAttribute/trackingUrl became read-only for the status 200

the response optional property inStreamAd/commonInStreamAttribute/video/unavailableReason became read-only for the status 200

the response optional property mastheadAd/companionYoutubeVideos/items/unavailableReason became read-only for the status 200

the response optional property mastheadAd/video/unavailableReason became read-only for the status 200

the response optional property nonSkippableAd/commonInStreamAttribute/trackingUrl became read-only for the status 200

the response optional property nonSkippableAd/commonInStreamAttribute/video/unavailableReason became read-only for the status 200

the response optional property videoDiscoverAd/video/unavailableReason became read-only for the status 200

the response optional property videoPerformanceAd/domain became read-only for the status 200

the response optional property videoPerformanceAd/trackingUrl became read-only for the status 200

the response optional property videoPerformanceAd/videos/items/unavailableReason became read-only for the status 200