Symfony\Component\Form\Extension\Validator\ValidatorTypeGuesser::guessType PHP Method

    public function guessType($class, $property)
    {
        $guesser = $this;

        return $this->guess($class, $property, function (Constraint $constraint) use ($guesser) {
            return $guesser->guessTypeForConstraint($constraint);
        });
    }