src/vs/base/parts/ipc/common/ipc.net.ts/Queue/push
class Queue:	public push(item: T): void {
		const element = new QueueElement(item);
		if (!this._first) {
			this._first = element;
			this._last = element;
			return;
		}
		this._last!.next = element;
		this._last = element;
	}