isEmail method
Checks if string is email.
Implementation
bool isEmail({int? minLength, int? maxLength}) =>
ValidatorUtils.isEmail(this) &&
((minLength != null)
? ValidatorUtils.isLengthGreaterOrEqual(this, minLength)
: true) &&
((maxLength != null)
? ValidatorUtils.isLengthLowerOrEqual(this, maxLength)
: true);