code: public static String unqualify(String qualifiedName, char separator) {
          return qualifiedName.substring(qualifiedName.lastIndexOf(separator) + 1);
      }
docs: Unqualify a string qualified by a separator character. For example,
  "this:name:is:qualified" returns "qualified" if using a ':' separator.
  @param qualifiedName the qualified name
  @param separator the separator