RFR: 8329644: Discuss expected visitor evolution patterns in javax.lang.model.util [v5]

[Joe Darcy]

> Provide more concrete discussion of how the preview visitors are expected to evolve for different categories of language changes.

Joe Darcy has updated the pull request incrementally with one additional commit since the last revision:

  Update copyrigth.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18804/files
  - new: https://git.openjdk.org/jdk/pull/18804/files/ccf84b3e..4859b385

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18804&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18804&range=03-04

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18804.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18804/head:pull/18804

PR: https://git.openjdk.org/jdk/pull/18804