PHP __call($method, $arguments) and __clone()

    /**
     * @param $method
     * @param $arguments
     * @return mixed
     * @throws Exception\InvalidArgumentException
     */
    public function __call($method, $arguments)
    {
        if ($this->featureSet->canCallMagicCall($method)) {
            return $this->featureSet->callMagicCall($method, $arguments);
        }
        throw new Exception\InvalidArgumentException('Invalid method (' . $method . ') called, caught by ' . __CLASS__ . '::__call()');
    }

    /**
     * __clone
     */
    public function __clone()
    {
        $this->resultSetPrototype = (isset($this->resultSetPrototype)) ? clone $this->resultSetPrototype : null;
        $this->sql = clone $this->sql;
        if (is_object($this->table)) {
            $this->table = clone $this->table;
        }
    }