In the FlowMetaData.cs what does the BlueElephant mean?

[liugt34]

// Oh no! I forgot to add "RequestVerificationToken" and "BlueElephant" to this list.
// Good thing I dynamically parse the object when I create this instead of using this method.
// otherwise, those properties will be null!
Hello, ruisilva
what's the usage of the Property "RequestVerificationToken" and "BlueElephant", i can't understand?