src/vs/workbench/api/common/extHostLanguageFeatures.ts/DocumentSemanticTokensAdapter/_isSemanticTokens
class DocumentSemanticTokensAdapter:	private static _isSemanticTokens(v: ProvidedSemanticTokens | ProvidedSemanticTokensEdits): v is ProvidedSemanticTokens {
		return v && !!((v as ProvidedSemanticTokens).data);
	}