Grid/Grid.php
public function getTweak($id)
    {
        $tweaks = $this->getTweaks();
        if (isset($tweaks[$id])) {
            return $tweaks[$id];
        }

        throw new \InvalidArgumentException(sprintf(self::NOT_VALID_TWEAK_ID_EX_MSG, $id));
    }
public function getTweak($id)
    {
        $tweaks = $this->getTweaks();
        if (isset($tweaks[$id])) {
            return $tweaks[$id];
        }

        throw new \InvalidArgumentException(sprintf(self::NOT_VALID_TWEAK_ID_EX_MSG, $id));
    }
Returns a tweak.

@return array