ItemStack to Gson works except for books and other items & Custom Key String Value

Plugins Plugin Development
5

It isn’t simple(in my eyes). There is a PR about this: Custom Data Generation by gabizou · Pull Request #1198 · SpongePowered/SpongeAPI · GitHub

Having to write 3 classes just to store a String onto an Entity or ItemStack is a bit excessive.

This helped me a lot: DataManipulatorGenerator