code: public function setParams(array $params)
      {
          $this->params = array_merge($this->params, $params);
          
          foreach ($this->forms as $form) {
              if (isset($form['__instance__'])
                  && is_object($form['__instance__'])
                  && method_exists($form['__instance__'], 'setParams')
              ) {
                  $form['__instance__']->setParams($params);
              }
          }
          return $this;
      }
docs: Sets formular parameters.
  
  @param array $params
  @return \Core\Form\Container