RFR: 8341064: Define anchor point and index term for "wrapper classes" [v2]

[Joe Darcy]

> The is the initial version of a PR to defined an anchor point and index term of "wrapper classes."

Joe Darcy has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Respond to review feedback; completed planned work.
 - Merge branch 'master' into JDK-8341064
 - JDK-8341064: Define archor point and index term for "wrapper classes"

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/21215/files
  - new: https://git.openjdk.org/jdk/pull/21215/files/ada19264..bf53c4c2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21215&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21215&range=00-01

  Stats: 700 lines in 45 files changed: 553 ins; 27 del; 120 mod
  Patch: https://git.openjdk.org/jdk/pull/21215.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21215/head:pull/21215

PR: https://git.openjdk.org/jdk/pull/21215