return Arrays.asList(new String[]{RANGE_CONSTRAINT_MIN, RANGE_CONSTRAINT_MAX});
}
private Object getMandatoryArgument(String key, ConstraintConfiguration conf) throws ArgumentNotSetException {
if (!conf.containsArgument(key)) {
throw new ArgumentNotSetException("The argument " + key + " doesn't exist.");
}
Object value = conf.getArgumentValue(key);
if (value == null) {
throw new ArgumentNotSetException("The argument " + key + " is null.");
}
return value;
}