isValidateEmail method
Checks whether the given string is a valid email address or not
Implementation
bool isValidateEmail() {
if (isEmptyOrNull) return false;
// const emailRegex = '^([\\w\\d\\-\\+]+)(\\.+[\\w\\d\\-\\+%]+)*@([\\w\\-]+\\.){1,5}(([A-Za-z]){2,30}|xn--[A-Za-z0-9]{1,26})\$';
// return regExp.hasMatch(this!.toLowerCase().trim());
return hasMatch(this!.toLowerCase().trim(), RegExpPatterns.email);
}