joomla 3 custom module class name

joomla 3 custom module class name

Running Joomla 3.1.5
I created a very simple module and I can't find anywhere in the module
options where to add a class name. This was easy in earlier versions of
Joomla; there was a "Menu Class Suffix" field under "ADVANCED OPTIONS."
How do I add a class name to my custom module? Thanks for the answers.