'Configures the image file loader so it returns a version of the
image that as closely as possible matches the given mode and
size.  For example, you can use this method to convert a color
JPEG to greyscale while loading it, or to extract a 128x192
version from a PCD file.
Note that this method modifies the :py:class:`~PIL.Image.Image` object
in place.  If the image has already been loaded, this method has no
effect.
Note: This method is not implemented for most images. It is
currently implemented only for JPEG and PCD images.
:param mode: The requested mode.
:param size: The requested size.'

def draft(self, mode, size):

    pass
