'Returns an
:py:class:`~PIL.TiffImagePlugin.ImageFileDirectory_v1`
instance with the same data as is contained in the original
:py:class:`~PIL.TiffImagePlugin.ImageFileDirectory_v2`
instance.
:returns: :py:class:`~PIL.TiffImagePlugin.ImageFileDirectory_v1`'

@classmethod
def from_v2(cls, original):

    ifd = cls(prefix=original.prefix)
    ifd._tagdata = original._tagdata
    ifd.tagtype = original.tagtype
    ifd.next = original.next
    return ifd
