pnwebrtc/src/main/java/me/kevingleason/pnwebrtc/PnSignalingParams.java
public void addIceServers(PeerConnection.IceServer iceServers){
        if (this.iceServers == null){
            this.iceServers = new ArrayList<PeerConnection.IceServer>();
        }
        this.iceServers.add(0, iceServers);
    }
public void addIceServers(PeerConnection.IceServer iceServers){
        if (this.iceServers == null){
            this.iceServers = new ArrayList<PeerConnection.IceServer>();
        }
        this.iceServers.add(0, iceServers);
    }
Instantiate iceServers if they are not already, and add Ice Server to beginning of list.
@param iceServers Ice Server to add