public function removeAll($name)
    {
        $s = $this->getNormalizedHeaderName($name);
        if (!empty($this->headerMap[$s])) {
            foreach ($this->headerMap[$s] as $i) {
                unset($this->headers[$i]);
                unset($this->headerObjects[$i]);
            }
            $this->headerMap[$s] = [];
            return true;
        }
        return false;
    }