AllowAdditionalProperties (TGoogleBaseObject)

pt 

SetchannelId (TSubscriptionSnippet)

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SetchannelTitle (TSubscriptionSnippet)

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Setdescription (TSubscriptionSnippet)

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SetpublishedAt (TSubscriptionSnippet)

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SetresourceId (TSubscriptionSnippet)

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Setthumbnails (TSubscriptionSnippet)

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Settitle (TSubscriptionSnippet)