code: public static String mapToPtPath(final String aBasePath, final String aID) {
          return concat(aBasePath, mapToPtPath(aID), null);
      }
docs: Maps the supplied ID to a Pairtree path using the supplied base path.
  
  @param aID An ID to map to a Pairtree path
  @param aBasePath The base path to use in the mapping
  @return The Pairtree path for the supplied ID