class PersistentId implements Serializable {

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder("PersistentId{");
        sb.append("nameId='").append(nameId).append('\'');
        sb.append('}');
        return sb.toString();
    }

    @SuppressWarnings("unused")//Needed by JAXB private  PersistentId();
    @JsonCreator public  PersistentId(@JsonProperty("nameId") String nameId);

}