src/Tokenizer/Tokens.php
public function offsetUnset($index)
    {
        $this->changed = true;
        $this->unregisterFoundToken($this[$index]);
        parent::offsetUnset($index);
    }
public function offsetUnset($index)
    {
        $this->changed = true;
        $this->unregisterFoundToken($this[$index]);
        parent::offsetUnset($index);
    }
Unset collection item.

@param int $index