extensions/typescript-language-features/src/utils/tracer.ts/Tracer/traceRequestCompleted
class Tracer:	public traceRequestCompleted(serverId: string, command: string, request_seq: number, meta: RequestExecutionMetadata): any {
		if (this.trace === Trace.Off) {
			return;
		}
		this.logTrace(serverId, `Async response received: ${command} (${request_seq}). Request took ${Date.now() - meta.queuingStartTime} ms.`);
	}