/**
* Set HTTP header value.
*
* This method sets a header value. It replaces
* any values that may already exist for the header name.
*
* @param string $key The case-insensitive header name
* @param string $value The header value
*/
public function set($key, $value)
{
if (!is_array($value)) {
$value = [$value];
}
parent::set($this->normalizeKey($key), ['value' => $value, 'originalKey' => $key]);
}
