[code-reflection] Integrated: Fix test

[Paul Sandoz]

Fix test after `CoreOps` to `CoreOp` refactor.

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Commit messages:
 - Fix test

Changes: https://git.openjdk.org/babylon/pull/74/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=74&range=00
  Stats: 6 lines in 1 file changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/babylon/pull/74.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/74/head:pull/74

PR: https://git.openjdk.org/babylon/pull/74