code: public IWizardElement getPrevious()
      {
          IWizardElement ret = null;
          for (final IWizardElement uiObject : this.elements) {
              if (uiObject == this.current) {
                  break;
              } else {
                  ret = uiObject;
              }
          }
          this.current = ret;
          return ret;
      }
docs: Method to get the previous object.
  
  @return previous object