@NonNull
    public static TrackableConnector getConnector(final Trackable trackable) {
        return getTrackableConnector(trackable.getGeocode());
    }
Get a connector capability for the given geocache. This might be {@code null} if the connector does not support
the given capability.

@return the connector cast to the requested capability or {@code null}.
main/src/main/java/cgeo/geocaching/connector/ConnectorFactory.java