module Sequel::Plugins::Serialization

def self.register_format(format, serializer, deserializer)

should be callable objects.
models to pick this format by name. Both serializer and deserializer
Register a serializer/deserializer pair with a format symbol, to allow
def self.register_format(format, serializer, deserializer)
  REGISTERED_FORMATS[format] = [serializer, deserializer]
end