Records to/from JSON

[Brian Goetz]

This is certainly one of the cases that MR Jars were designed for, but 
`Class::isRecord` is so trivial that I would probably just use reflection:

```
static final Predicate<Class> isRecord;

static {
     try {
         Method m = Class.class.getDeclaredMethod("isRecord", ...);
         isRecord = c -> { try { return m.invoke(c); }
                           catch (ROE e) { return false; } };
     }
     catch (ROE e) {
         isRecord = c -> false;
     }
}
```



On 5/7/2020 5:35 PM, Alex Buckley wrote:
>
> A critical issue for the Jackson team seems to be detecting that a 
> class is a record without using `Class::isRecord`, because it doesn't 
> exist on Java 8. Multi-Release JARs, documented in JEP 238, would help 
> Jackson here.