@Override
    public String toString() {
        return new StringJoiner(", ", UserBean.class.getSimpleName() + "[", "]")
                .add("username='" + username + "'")
                .add("fullName='" + fullName + "'")
                .add("email='" + email + "'")
                .add("joinedOn=" + joinedOn)
                .add("locale='" + locale + "'")
                .add("admin=" + admin)
                .toString();
    }
Set locale

@param locale the locale language tag
@see Locale#toLanguageTag()
manager/api/beans/src/main/java/io/apiman/manager/api/beans/idm/UserBean.java