src/vs/workbench/services/textfile/common/textFileEditorModelManager.ts/TextFileEditorModelManager/joinPendingResolves
class TextFileEditorModelManager:	private joinPendingResolves(resource: URI): Promise<void> | undefined {
		const pendingModelResolve = this.mapResourceToPendingModelResolvers.get(resource);
		if (!pendingModelResolve) {
			return;
		}

		return this.doJoinPendingResolves(resource);
	}