[code-reflection] RFR: Update the model of pattern matching when pattern variable identifier is underscore [v2]

[Mourad Abbay]

> Update the generated code model of pattern matching when pattern variable identifier is "_"

Mourad Abbay has updated the pull request incrementally with one additional commit since the last revision:

  Update effected tests

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Changes:
  - all: https://git.openjdk.org/babylon/pull/227/files
  - new: https://git.openjdk.org/babylon/pull/227/files/4c1c4169..17545115

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=227&range=01
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=227&range=00-01

  Stats: 86 lines in 1 file changed: 0 ins; 15 del; 71 mod
  Patch: https://git.openjdk.org/babylon/pull/227.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/227/head:pull/227

PR: https://git.openjdk.org/babylon/pull/227