src/vs/base/parts/ipc/node/ipc.cp.ts/Client/getCachedChannel
class Client:	private getCachedChannel(name: string): IChannel {
		let channel = this.channels.get(name);

		if (!channel) {
			channel = this.client.getChannel(name);
			this.channels.set(name, channel);
		}

		return channel;
	}