Simply returns the http\Message chain representing the request/response history.
-> **Note:** The history is only recorded while http\Client::$recordHistory is true.
+> ***NOTE:***
+> The history is only recorded while http\Client::$recordHistory is true.
## Params:
* http\Message, the request/response message chain representing the client's history.
+## Throws:
+
+* http\Exception\InvalidArgumentException
+
## Example:
<?php