[Variant] Remove explicit ObjectBuilder::finish() and ListBuilder::finish and move to Drop impl #7780
Description
Looking at these examples, it seems to me like the current API requires callingfinish
One problem with this is that it requires someone to remember to call finish otherwise their object will only be half written
it seems like it might be a nicer API if that just happened on drop() -- so you could use the scope of the example, like you have here, and the dropping would just complete the object
This would be a great follow on PR
Originally posted by @alamb in #7778 (comment)