Can someone help with this code? I am having trouble with these.

// update_observations - retrieve the latest list of observations   //  from the server API   // when the request is resolved, creates a "modelUpdated" event   // with the model as the event detail   update_observations: function() {       }, // update_users - retrieve the latest list of users   //  from the server API   // when the request is resolved, creates a "modelUpdated" event   // with the model as the event detail   update_users: function() {       }, // add_observation - add a new observation by submitting a request   //  to the server API   //  formdata is a FormData object containing all fields in the observation object   // when the request is resolved, creates an "observationAdded" event   // with the response from the server as the detail   add_observation: function(formdata) {   },