docs: @Override
      public DfsReferralDataInternal combine ( DfsReferralData n ) {
          DfsReferralDataImpl dr = new DfsReferralDataImpl();
          dr.server = n.getServer();
          dr.share = n.getShare();
          dr.expiration = n.getExpiration();
          dr.path = n.getPath();
          dr.pathConsumed = this.pathConsumed + n.getPathConsumed();
          if ( this.path != null ) {
              dr.pathConsumed -= ( this.path != null ? this.path.length() + 1 : 0 );
          }
          dr.domain = n.getDomain();
          return dr;
      }