Module Iobuf.Fill

module Fill: Accessors 
    with type ('a, 'd, 'w) t = (read_write, seek) t -> 'a -> unit 
    with type 'a bin_prot := 'a Bin_prot.Type_class.writer

Fill.bin_prot X.bin_write_t t x writes x to t in bin-prot form, advancing past the bytes written.