composeHeaderLines() public method

Each line will be a string in format: 'header-name: value'.
public composeHeaderLines ( ) : array
return array raw header lines.
 /**
  * @inheritdoc
  */
 public function composeHeaderLines()
 {
     $headers = parent::composeHeaderLines();
     if ($this->hasCookies()) {
         $headers[] = $this->composeCookieHeader();
     }
     return $headers;
 }