docs: public static String getSetKey(Type type, Annotation[] annotations, Object subject) {
      Annotation qualifier = extractQualifier(annotations, subject);
      type = boxIfPrimitive(type);
      StringBuilder result = new StringBuilder();
      if (qualifier != null) {
        result.append(qualifier).append("/");
      }
      result.append(SET_PREFIX);
      typeToString(type, result, true);
      result.append(">");
      return result.toString();
    }