code: public String getEscapedAboveHierPath() throws URIException {
          char[] path = getRawAboveHierPath();
          return (path == null) ? null : new String(path);
      }
docs: Get the level above the this hierarchy level.
  
  @return the raw above hierarchy level
  @throws URIException If {@link #getRawCurrentHierPath(char[])} fails.