src/Transient.php
public function delete($id)
    {
        if (!$this->contains($id)) {
            return false;
        }

        unset($this->data[$id]);
        return true;
    }
public function delete($id)
    {
        if (!$this->contains($id)) {
            return false;
        }

        unset($this->data[$id]);
        return true;
    }
{@inheritdoc}