extensions/typescript-language-features/src/tsServer/requestQueue.ts/RequestQueue/tryDeletePendingRequest
class RequestQueue:	public tryDeletePendingRequest(seq: number): boolean {
		for (let i = 0; i < this.queue.length; i++) {
			if (this.queue[i].request.seq === seq) {
				this.queue.splice(i, 1);
				return true;
			}
		}
		return false;
	}