formatOther(valueOrElement, optionOverride = null) { //FIXME test this
        return this._formatOrUnformatOther(true, valueOrElement, optionOverride);
    }
Format and return the given value, or set the formatted value into the given DOM element if one is passed as an argument.
By default, this use the current element settings.
The user can override any option of its choosing by passing an option object.

@param {number|HTMLElement|HTMLInputElement} valueOrElement
@param {null|object} optionOverride
@returns {string|null}