@Override
  public String toString() {
    return "[URL: " + this.url
        + " - Available Slots: " + this.availableSlots
        + " - Network Profile: " + (this.networkProfile == null ? "NONE" : this.networkProfile.getName()) + "]\n";
  }
Retrieve hub url.

@return the string
KITE-Framework/src/main/java/org/webrtc/kite/config/paas/Paas.java