code: public function clickImageById($id, $x = 1, $y = 1, $additional = false)
      {
          if (! ($form = $this->page->getFormByImage(new SelectById($id)))) {
              return false;
          }
          $success = $this->load(
                  $form->getAction(),
                  $form->submitImage(new SelectById($id), $x, $y, $additional));
  
          return ($success ? $this->getContent() : $success);
      }
docs: Clicks the submit image by ID attribute.
  The owning form will be submitted by this.
  Clicking outside of the boundary of the coordinates will result in a failure.
  
  @param integer/string $id    ID attribute of button.
  @param int $x            X-coordinate of imaginary click.
  @param int $y            Y-coordinate of imaginary click.
  @param hash $additional      Additional form data.
  
  @return string/boolean       Page on success.