src/vs/base/parts/ipc/common/ipc.ts/ChannelClient/onResponse
class ChannelClient:	private onResponse(response: IRawResponse): void {
		if (response.type === ResponseType.Initialize) {
			this.state = State.Idle;
			this._onDidInitialize.fire();
			return;
		}

		const handler = this.handlers.get(response.id);

		handler?.(response);
	}