code: def get_elm(
              self,
              id_=None, class_name=None, name=None, tag_name=None, text=None, xpath=None,
              parent_id=None, parent_class_name=None, parent_name=None, parent_tag_name=None,
              css_selector=None
      ):
          
          elms = self.get_elms(
              id_, class_name, name, tag_name, text, xpath,
              parent_id, parent_class_name, parent_name, parent_tag_name,
              css_selector
          )
          if not elms:
              raise selenium_exc.NoSuchElementException(_create_exception_msg(
                  id_, class_name, name, tag_name,
                  parent_id, parent_class_name, parent_name, parent_tag_name,
                  text, xpath, css_selector, self.current_url,
                  driver=self._driver,
              ))
          return elms[0]
docs: Returns first found element. This method uses
          :py:meth:`~._WebdriverBaseWrapper.get_elms`.