original_string: public function getClickedButton()
      {
          if ($this->clickedButton) {
              return $this->clickedButton;
          }
  
          if ($this->parent && method_exists($this->parent, 'getClickedButton')) {
              return $this->parent->getClickedButton();
          }
      }
code: public function getClickedButton()
      {
          if ($this->clickedButton) {
              return $this->clickedButton;
          }
  
          if ($this->parent && method_exists($this->parent, 'getClickedButton')) {
              return $this->parent->getClickedButton();
          }
      }
code_tokens: public function getClickedButton ( ) { if ( $ this -> clickedButton ) { return $ this -> clickedButton ; } if ( $ this -> parent && method_exists ( $ this -> parent , 'getClickedButton' ) ) { return $ this -> parent -> getClickedButton ( ) ; } }
docstring: Returns the button that was used to submit the form.
  
  @return ClickableInterface|null
docstring_tokens: Returns the button that was used to submit the form .