docs: public static Reference createAmbiguousReference
                      (String shortDefaultBinding,
                       List<J2EEName> j2eeNames)
      {
          String message = "The short-form default binding '" + shortDefaultBinding +
                           "' is ambiguous because multiple beans implement the interface : " +
                           j2eeNames + ". Provide an interface specific binding or use " +
                           "the long-form default binding on lookup.";
  
          StringRefAddr refAddr = new StringRefAddr(ADDR_TYPE, message);
          Reference ref = new Reference(ADDR_TYPE, refAddr,
                          AMBIGUOUS_FACTORY_NAME, null);
          return ref;
      }