module MessagePack
module MessagePack::CoreExt
class Array
class Bignum
class FalseClass
class Fixnum
class Float
class Hash
class Integer
class MessagePack::ExtensionValue
class MessagePack::Factory
class MessagePack::Packer
class MessagePack::Unpacker
class NilClass
class String
class Symbol
class TrueClass
msgpack
1.2.2
def to_msgpack_with_packer(packer) packer.write_nil packer end