interface and strictly implement the to/from ByteBuffer protocol. In the future
this will allow the message protocol to be swappable. Also moved out the buffering
aspect since often buffers need to be created 'on the fly' and are separate from
the protocol. This will allow me to play with fixing the issue related to messages
being deserialized before the serialization registry message has been processed by
swapping out the GreedyMessageBuffer implementation for a LazyMessageBuffer implementation.
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