var NOT_BLANK_VALIDATOR = new NotBlankValidator("This field cannot be blank.");

var NOT_BLANK_EMAIL_VALIDATOR = new EmailValidator(new NotBlankValidator("Email is a required Field."), "Please enter a valid email address.");

var NOT_BLANK_AT_LEAST_SIX_CHARS_VALIDATOR = new MinLengthValidator(new NotBlankValidator("Password is a required field."), "Password must be at least 6 characters in length.", 6);