public Class<?> getValueType() {
        return ELUtils.getType(getFacesContext(), getValueExpression("value"), this::getValue);
    }
@see <a href="https://github.com/RobinHerbots/Inputmask/blob/5.x/README_date.md">Inputmask README_date</a>
@param patternTemplate the date pattern
@return the value converted for InputMask plugin
primefaces/src/main/java/org/primefaces/component/api/UICalendar.java