code: function(o) {
          o = o || {};
  
          var me = this,
              statusEl = me.statusEl;
  
          if (o.threadId && o.threadId !== me.activeThreadId) {
              // this means the current call was made internally, but a newer
              // thread has set a message since this call was deferred.  Since
              // we don't want to overwrite a newer message just ignore.
              return me;
          }
  
          var text = o.useDefaults ? me.defaultText : me.emptyText,
              iconCls = o.useDefaults ? (me.defaultIconCls ? me.defaultIconCls : '') : '';
  
          if (o.anim) {
              // animate the statusEl Ext.Element
              statusEl.el.puff({
                  remove: false,
                  useDisplay: true,
                  callback: function() {
                      statusEl.el.show();
                      me.setStatus({
                          text: text,
                          iconCls: iconCls
                      });
                  }
              });
          } else {
               me.setStatus({
                   text: text,
                   iconCls: iconCls
               });
          }
          return me;
      }
docs: Clears the status {@link #text} and {@link #iconCls}. Also supports clearing via an optional fade out animation.
  
  @param {Object} [config] A config object containing any or all of the following properties.  If this
  object is not specified the status will be cleared using the defaults below:
  @param {Boolean} config.anim True to clear the status by fading out the status element (defaults
  to false which clears immediately).
  @param {Boolean} config.useDefaults True to reset the text and icon using {@link #defaultText} and
  {@link #defaultIconCls} (defaults to false which sets the text to '' and removes any existing icon class).
  
  @return {Ext.ux.statusbar.StatusBar} this