docs: public static void setProperties( Properties prp ) {
          Config.prp = new Properties( prp );
          try {
              Config.prp.putAll( System.getProperties() );
          } catch( SecurityException se ) {
              if( log.level > 1 )
                  log.println( "SecurityException: jcifs.smb1 will ignore System properties" );
          }
      }