I'm triying to resize and crop an image with the Phalcon\Image\Adapter\GD
https://docs.phalcon.io/en/master/api/Phalcon_Image_Adapter_GD.html
The docs says
Resize the image to the given size. Either the width or the height can be omitted and the image will be resized proportionally.
but I tried with null and 0 on the first parameter and an exception is throw:
width and height must be specified