code: private boolean isIncluded( VarNamePattern varNamePath)
      {
      // If no included patterns specified, include all variables.
      boolean included = getIncludedVars().isEmpty();
      if( !included)
        {
        // Otherwise, look for a matching pattern.
        Iterator<VarNamePattern> includedVars = getIncludedVars().iterator();
        while( includedVars.hasNext() && !(included = includedVars.next().matches( varNamePath)));
        }
      
      return included;
      }
docs: Returns true if the given variable matches any included input variable.