[jdk23] RFR: 8335637: Add explicit non-null return value expectations to Object.toString()

[Jaikiran Pai]

On Wed, 10 Jul 2024 21:35:55 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> 8335637: Add explicit non-null return value expectations to Object.toString()

This is a clean backport of a doc-only change with an approved CSR. Looks good to me for 23.

-------------

Marked as reviewed by jpai (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/20124#pullrequestreview-2170701403