TrainFormat is a general example of MetaSerialization's usage. The example code includes a custom implementation of MetaSupplier and Unwrapper as well as implementations of Serialization and Representation. TrainFormat also features custom implementations of Meta, KeyedContainerMeta and UnkeyedContainerMeta, all based on a useless "train format" that looks something like this:

🚂["someArrayProperty": -1>, "someDoubleProperty": "9543.43"]¬["1.": "43", "2.": "44"]