code: protected function resizeImage($image, $width, $height, $mode='')
  	{
  		@trigger_error('Using Controller::resizeImage() has been deprecated and will no longer work in Contao 5.0. Use Image::resize() instead.', E_USER_DEPRECATED);
  
  		return Image::resize($image, $width, $height, $mode);
  	}
docs: Resize an image and crop it if necessary
  
  @param string  $image  The image path
  @param integer $width  The target width
  @param integer $height The target height
  @param string  $mode   An optional resize mode
  
  @return boolean True if the image has been resized correctly
  
  @deprecated Deprecated since Contao 4.0, to be removed in Contao 5.0.
  Use Image::resize() instead.