/**
* Add a Header\Interface to this container, for raw values see {@link addHeaderLine()} and {@link addHeaders()}
*
* @param Header\HeaderInterface $header
* @return Headers
*/
public function addHeader(Header\HeaderInterface $header)
{
$key = $this->normalizeFieldName($header->getFieldName());
$this->headersKeys[] = $key;
$this->headers[] = $header;
if ($this->getEncoding() !== 'ASCII') {
$header->setEncoding($this->getEncoding());
}
return $this;
}
