Entity/Dynamic.php
public function __isset($name)
    {
        if (!is_string($name)) {
            return false;
        }

        if (property_exists($this, $name) && $this->$name !== null) {
            return true;
        }

        $data = $this->getData();

        return isset($data[$name]);
    }
public function __isset($name)
    {
        if (!is_string($name)) {
            return false;
        }

        if (property_exists($this, $name) && $this->$name !== null) {
            return true;
        }

        $data = $this->getData();

        return isset($data[$name]);
    }
{@inheritdoc}