     return owner
 
 
-  removeUser = (users, user)->
+  excludeUser = (users, user)->
 
     userId   = user.getId()
     newUsers = []


  addUser = (users, user, owner)->

    newUsers = removeUser users, user
    newUsers.push { id: user.getId(), owner }

    return newUsers


    users = @users.splice 0

    for user in usersToRemove
      users = excludeUser users, user

    @update $set: { users }, callback

