src/vs/workbench/api/common/extHostLanguageFeatures.ts/DocumentRangeSemanticTokensAdapter/provideDocumentRangeSemanticTokens
class DocumentRangeSemanticTokensAdapter:	async provideDocumentRangeSemanticTokens(resource: URI, range: IRange, token: CancellationToken): Promise<VSBuffer | null> {
		const doc = this._documents.getDocument(resource);
		const value = await this._provider.provideDocumentRangeSemanticTokens(doc, typeConvert.Range.to(range), token);
		if (!value) {
			return null;
		}
		return this._send(value);
	}