pub unsafe extern "C" fn heif_context_set_primary_image(
arg1: *mut heif_context,
image_handle: *mut heif_image_handle,
) -> heif_errorpub unsafe extern "C" fn heif_context_set_primary_image(
arg1: *mut heif_context,
image_handle: *mut heif_image_handle,
) -> heif_error