From: <wqt.net_at_gmail.com>
Date: Thu, 20 Aug 2015 19:27:28 +0000 (UTC)

In my source code, I have a dozen post parameters to set in the
"formPart", and then a StreamBody in the end of the "multiPart". The
multiPart then is used to create the Entity instance for the
invocate().

I do not want to copy and paste all that in the unit test.