fn slice_infer_headers<'slf, Channels: 'slf + WritableChannels<'slf>>(
slice: &[Layer<Channels>],
image_attributes: &ImageAttributes,
) -> Headers
fn slice_infer_headers<'slf, Channels: 'slf + WritableChannels<'slf>>(
slice: &[Layer<Channels>],
image_attributes: &ImageAttributes,
) -> Headers