CSOM Equivalent of allusers

Question

Can anyone tell me if there is an Equivalent of allusers in sharepoint csom. I cant seem to find anything. Basically im creating a remote event receiver and im trying to replace the following piece of code with the CSOM equivalent

properties.Web.AllUsers.GetByID(properties.GroupUserId)

Answer 1

Can't believe this wasn't answered!

The following should work:

https://msdn.microsoft.com/EN-US/library/office/microsoft.sharepoint.client.web.siteusers.aspx

https://msdn.microsoft.com/EN-US/library/office/microsoft.sharepoint.client.usercollection.getbyid.aspx