doValidate method
Implementation
@override
ValidationResult doValidate() {
// If key is in reserved key list, return false.
var reservedKey = _reservedKey(key);
if (reservedKey != ReservedKey.nonReservedKey &&
ReservedKey.values.contains(reservedKey)) {
return ValidationResult('Reserved key cannot be created');
}
return ValidationResult.noFailure();
}