TimePicker setMax and setMin NULL values

I think I found a bug in the TimePicker component (Vaadin 14). If you provide NULL for the max string (as described in the param description), a null pointer exception is thrown.

 * Sets the maximum time in the time picker. Times after that will be
 * disabled in the popup.
 * @param max
 *            the maximum time that is allowed to be selected, or
 *            <code>null</code> to remove any maximum constraints
public void setMax(String max) {
	this.max = LocalTime.parse(max, initializeAndReturnFormatter());

You’re right. Here’s a ticket: https://github.com/vaadin/vaadin-time-picker-flow/issues/61