RFR: [bworld-apis] Adding more bangs to collections [v2]

[Vicente Romero]

> adding more bangs to collection apis

Vicente Romero has updated the pull request incrementally with two additional commits since the last revision:

 - Apply suggestion from @vicente-romero-oracle
 - removing invocations to Objects.requireNonNull

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Changes:
  - all: https://git.openjdk.org/valhalla/pull/2112/files
  - new: https://git.openjdk.org/valhalla/pull/2112/files/a244b98f..ffd4e366

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=2112&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=2112&range=00-01

  Stats: 11 lines in 4 files changed: 0 ins; 10 del; 1 mod
  Patch: https://git.openjdk.org/valhalla/pull/2112.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2112/head:pull/2112

PR: https://git.openjdk.org/valhalla/pull/2112