code: function() {
        var interval,
            that          = this,
            form          = this.textarea.element.form,
            startInterval = function() {
              interval = setInterval(function() { that.fromComposerToTextarea(); }, INTERVAL);
            },
            stopInterval  = function() {
              clearInterval(interval);
              interval = null;
            };
  
        startInterval();
  
        if (form) {
          // If the textarea is in a form make sure that after onreset and onsubmit the composer
          // has the correct state
          wysihtml5.dom.observe(form, "submit", function() {
            that.sync(true);
          });
          wysihtml5.dom.observe(form, "reset", function() {
            setTimeout(function() { that.fromTextareaToComposer(); }, 0);
          });
        }
  
        this.editor.on("change_view", function(view) {
          if (view === "composer" && !interval) {
            that.fromTextareaToComposer(true);
            startInterval();
          } else if (view === "textarea") {
            that.fromComposerToTextarea(true);
            stopInterval();
          }
        });
  
        this.editor.on("destroy:composer", stopInterval);
      }
docs: Initializes interval-based syncing
  also makes sure that on-submit the composer's content is synced with the textarea
  immediately when the form gets submitted