public boolean isValid(StatusListener listener) {
		if (validator != null) {
			return validator.validate(this, listener);
		}
		return true;
	}
The call to validate the data using the {@link ValuesMapValidator} set in the
{@link #setValidator(ValuesMapValidator)} method. If no validator has been set,
this method will return true.
@param listener The {@link StatusListener} for reporting an error message.
@return true if the validator passes or no validator has been set.
Ghidra/Framework/Docking/src/main/java/docking/widgets/values/GValuesMap.java