src/Row.php
public function __isset(string $name): bool
    {
        $valueName = $this->getValueName($name);

        return (isset($valueName) && !is_null($this->getValue($valueName))) || isset($this->data[$name]);
    }
public function __isset(string $name): bool
    {
        $valueName = $this->getValueName($name);

        return (isset($valueName) && !is_null($this->getValue($valueName))) || isset($this->data[$name]);
    }
Check whether a value is set or not