pub unsafe extern "C" fn g_converter_convert(
converter: *mut GConverter,
inbuf: *mut u8,
inbuf_size: size_t,
outbuf: *mut u8,
outbuf_size: size_t,
flags: GConverterFlags,
bytes_read: *mut size_t,
bytes_written: *mut size_t,
error: *mut *mut GError,
) -> GConverterResult