A collection of iobuf access functions. This abstracts over Iobuf.Consume, Iobuf.Fill, Iobuf.Peek, and Iobuf.Poke.
Iobuf.Consume
Iobuf.Fill
Iobuf.Peek
Iobuf.Poke
('d, 'w) Iobuf.t accessor function manipulating 'a, either writing it to the iobuf or reading it from the iobuf.
('d, 'w) Iobuf.t
'a