Is this IMAGETYPE_WEBP function exist in CI?

Hi, every one around! have been trying and using CI

PHP Code:

$image = \Config\Services::image(); 


for converting an image to (WEBP)

PHP Code:

->convert( IMAGETYPE_WEBP) 


but is not working Is there any issue or am I wrong somewhere!!! or (is it a bug!!!???)

but have my own library made from here
https://www.php.net/manual/en/function.imagewebp.php it is working fine but I want to use CI only anyone tells me why

Codeigniter First, Codeigniter Then You!!

yekrinaDigitals