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GetDeltaDownloadSize

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		Name	Description
	int64	GetDeltaDownloadSize ( const TSet< FString >& Tags, const IBuildManifestRef& PreviousV... )	Get the size of the download of this set of tags
	int64	GetDeltaDownloadSize ( const TSet< FString >& Tags, const IBuildManifestRef& PreviousV..., const TSet< FString >& PreviousTag... )	Get the size of the download of this set of tags

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