title: Rally sdk - get list of tasks from a story object
body: <p>Know how to get list of tasks from a Rally story object? The Tasks is list in story. I tried with story.get("Tasks") and story.getCollection("Tasks"). But both the methods throw undefined error in debugger</p>
  
  <pre><code>    Ext.Array.each(stories, function(story){
          var storyTasks = ***story.get('Tasks');***
  
          storyTasks.load({
              fetch: ['Owner', 'FormattedID'],
              callback: function(records, operation, success){
                  Ext.Array.each(records, function(record){
                      taskOwners.push({owner: record.get('Owner'),
                          points: story.PlanEstimate});
                  }, this);
              },
              scope: this
          });         
      });
  </code></pre>