From Tagir:

https://mail.openjdk.org/pipermail/babylon-dev/2024-July/001096.html

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1. NewOp does not provide a direct way to resolve a constructor. For InvokeOp, one can use op.invokeDescriptor().resolveToHandle(lookup), but creating an instance having a NewOp in hands is more tricky. I do it like this

          Class<?>[] argTypes = newOp.constructorType().parameterTypes().stream()
                  .map(this::toClass).toArray(Class[]::new);
          Class<?> objType = toClass(newOp.type());
          Object result = objType.getConstructor(argTypes).newInstance(arguments.toArray());

(where toClass is a helper method to get a class from the type). I feel that there should be a simple method to resolve to a Constructor or a MethodHandle.
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