@Override
    protected void onStartLoading() {
        forceLoad();
    }
Run {@link SearchResult#parallelCombineActive(Collection, Function)} if there is at least one active connector
in <tt>connectors</tt>, and throw <tt>NoConnectorException</tt> otherwise.

@param connectors a collection of connectors
@param func       a function to apply to every connector
@param <C>        the type of connectors
@return the result of {@link SearchResult#parallelCombineActive(Collection, Function)} if there is at least one
active connector
main/src/main/java/cgeo/geocaching/loaders/AbstractSearchLoader.java