-* ```string $header_name```, the name of the response header.
-* Optional ```mixed $header_value```, the header value.
-* Optional ```int $response_code```, any HTTP response status code to set.
-* Optional ```bool $replace```, whether to replace a previously set response header with the same name.
+* string $header_name, the name of the response header.
+* Optional mixed $header_value, the header value.
+* Optional int $response_code, any HTTP response status code to set.
+* Optional bool $replace, whether to replace a previously set response header with the same name.