[code-reflection] RFR: Test Switch Expression lowering when case is pattern [v2]

[Mourad Abbay]

> Test Switch Expression lowering when case is pattern.

Mourad Abbay has updated the pull request incrementally with four additional commits since the last revision:

 - Merge branch 'test-sw-lowering' into test-sw-lowering-case-pattern
 - Write code models without location info
 - Fix a typo
 - Add compiler tests of Switch Expression.

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Changes:
  - all: https://git.openjdk.org/babylon/pull/191/files
  - new: https://git.openjdk.org/babylon/pull/191/files/9027f805..4f7e9843

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=191&range=01
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=191&range=00-01

  Stats: 651 lines in 2 files changed: 647 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/babylon/pull/191.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/191/head:pull/191

PR: https://git.openjdk.org/babylon/pull/191