concurrency issue with how param mappings are copied down

i.e. Tadpole#addAdditionalSaveData, Entity has it as tag, all other sub classes as compound, tadpole itself has none.
its a race whether tag or compound (correct) is used.
it seems like hypo doesn't iterate the hierarchy properly, it looks at all child methods, not only direct childs, so it can't properly stop if it encounters a mapping.

for now workaround is just disable parallism for hypo