How to use

getNsPrefixURI

method

in

org.apache.jena.sparql.util.PrefixMapping2

@Override
public PrefixMapping withDefaultMappings(PrefixMapping map)
{
  for ( Map.Entry<String, String> e : map.getNsPrefixMap().entrySet() )
  {
    String prefix = e.getKey();
    String uri = e.getValue();
    if ( getNsPrefixURI( prefix ) == null && getNsURIPrefix( uri ) == null )
    {
      setNsPrefix( prefix, uri );
    }
  }
  return this;
}