+ * @param string $name Case-insensitive header name
+ * @param int $flags Bitwise combination of:
+ * WebRequest::GETHEADER_LIST Treat the header as a comma-separated list
+ * of values, as described in RFC 2616 ยง 4.2.
+ * (since 1.26).
+ * @return string|array|bool False if header is unset; otherwise the
+ * header value(s) as either a string (the default) or an array, if
+ * WebRequest::GETHEADER_LIST flag was set.
+ */
+ public function getHeader( $name, $flags = 0 ) {