[code-reflection] RFR: Test java version check we do in op building methods [v6]

[Mourad Abbay]

> Write test to make sure java version check we do before building models is working.
> There are other options to do the test, one in particular is passing the java compile time version as option and update the OpBuilder to accept the feature version we test against.

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

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Changes:
  - all: https://git.openjdk.org/babylon/pull/748/files
  - new: https://git.openjdk.org/babylon/pull/748/files/3536e587..977c5816

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=748&range=05
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=748&range=04-05

  Stats: 4 lines in 1 file changed: 0 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/babylon/pull/748.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/748/head:pull/748

PR: https://git.openjdk.org/babylon/pull/748