src/Validator.php
public function presentAndUnique($field_name, ...$context)
    {
        if ($this->present($field_name)) {
            return $this->unique($field_name, ...$context);
        }

        return false;
    }
public function presentAndUnique($field_name, ...$context)
    {
        if ($this->present($field_name)) {
            return $this->unique($field_name, ...$context);
        }

        return false;
    }
{@inheritdoc}