src/vs/base/common/worker/simpleWorker.ts/SimpleWorkerProtocol/_send
class SimpleWorkerProtocol:	private _send(msg: IRequestMessage | IReplyMessage): void {
		let transfer: ArrayBuffer[] = [];
		if (msg.req) {
			const m = <IRequestMessage>msg;
			for (let i = 0; i < m.args.length; i++) {
				if (m.args[i] instanceof ArrayBuffer) {
					transfer.push(m.args[i]);
				}
			}
		} else {
			const m = <IReplyMessage>msg;
			if (m.res instanceof ArrayBuffer) {
				transfer.push(m.res);
			}
		}
		this._handler.sendMessage(msg, transfer);
	}