code: def wait_until_loaded(self, timeout=None):
          
          for element in self._get_page_elements():
              if hasattr(element, 'wait') and element.wait:
                  from toolium.pageelements.page_element import PageElement
                  if isinstance(element, PageElement):
                      # Pageelement and Group
                      element.wait_until_visible(timeout)
                  if isinstance(element, PageObject):
                      # PageObject and Group
                      element.wait_until_loaded(timeout)
          return self
docs: Wait until page object is loaded
          Search all page elements configured with wait=True
  
          :param timeout: max time to wait
          :returns: this page object instance