src/vs/workbench/api/common/extHostTextEditor.ts/ExtHostTextEditorOptions/_warnOnError
class ExtHostTextEditorOptions:	private _warnOnError(action: string, promise: Promise<any>): void {
		promise.catch(err => {
			this._logService.warn(`ExtHostTextEditorOptions '${action}' failed:'`);
			this._logService.warn(err);
		});
	}