What namespace and methods are used to get a Menu objectin decoupled Orchard Core CMS?

I am building a Decoupled Orchard Core CMS using 1.4. I have gone into the admin and created 3 menus titled "SiteMenu", "PageInfoMenu", and "PageMediaMenu". I am trying to create a VM to pass to a view that generates the site navigation menu. I have looked that references section of the documention and think I understand how to navigate the menu items to generate the menu but what I can't figure out is what namespace/method is used to make a model filled with the right menu data. It seems to be OrchardCore.Menu but intellisense is not showing me anything that looks like I can use to create the model and propigate it with the SiteMenu data. Can anyone tell me what namespace/method am I supposed to use?