src/vs/platform/tunnel/common/tunnel.ts/AbstractTunnelService/getTunnels
class AbstractTunnelService:	private async getTunnels(): Promise<readonly RemoteTunnel[]> {
		const tunnels: RemoteTunnel[] = [];
		const tunnelArray = Array.from(this._tunnels.values());
		for (const portMap of tunnelArray) {
			const portArray = Array.from(portMap.values());
			for (const x of portArray) {
				const tunnelValue = await x.value;
				if (tunnelValue) {
					tunnels.push(tunnelValue);
				}
			}
		}
		return tunnels;
	}