code: public void addInInclusionChain(final URI path, final String pointer)
              throws XIncludeFatalException
      {
          final String xincludePath = path.toASCIIString() + ((null != pointer) ? ('#' + pointer) : "");
          if (this.xincludeDeque.contains(xincludePath))
          {
              throw new XIncludeFatalException("Inclusion Loop on path: " + xincludePath);
          }
          this.xincludeDeque.addLast(xincludePath);
      }
docs: Add in inclusion chain.
  
  @param path the path
  @param pointer the pointer
  @throws XIncludeFatalException the x include fatal exception