code: function(response) {
              message      = response.data;
              users        = $module.data('users');
              loggedInUser = $module.data('user');
              if(users[ message.userID] !== undefined) {
                // logged in user's messages already pushed instantly
                if(loggedInUser === undefined || loggedInUser.id != message.userID) {
                  message.user = users[ message.userID ];
                  module.message.display(message);
                }
              }
            }
docs: receives chat response and processes