major refactoring

lib/tasks/sip_decline.js

@@ -1,6 +1,9 @@
 const Task = require('./task');
 const {TaskName, TaskPreconditions} = require('../utils/constants');
 
+/**
+ * Rejects an incoming call with user-specified status code and reason
+ */
 class TaskSipDecline extends Task {
   constructor(logger, opts) {
     super(logger, opts);
@@ -11,10 +14,8 @@ class TaskSipDecline extends Task {
 
   get name() { return TaskName.SipDecline; }
 
-  /**
-   * Reject an incoming call attempt with a provided status code and (optionally) reason
-   */
   async exec(cs, {res}) {
+    super.exec(cs);
     res.send(this.data.status, this.data.reason, {
       headers: this.headers
     });