Clean Code for bundles/org.eclipse.equinox.p2.engine

[eclipse-equinox-bot]

The following cleanups where applied:

• Add final modifier to private fields
• Add missing '@Deprecated' annotations
• Add missing '@Override' annotations
• Add missing '@Override' annotations to implementations of interface methods
• Convert control statement bodies to block
• Make inner classes static where possible
• Replace deprecated calls with inlined content where possible
• Use pattern matching for instanceof

[github-actions]

Test Results

  375 files  ±0    375 suites  ±0   42m 24s ⏱️ +13s
1 905 tests ±0  1 902 ✅ ±0  3 💤 ±0  0 ❌ ±0 
6 715 runs  ±0  6 706 ✅ ±0  9 💤 ±0  0 ❌ ±0 

Results for commit a5582d5. ± Comparison against base commit 5e9376f.

♻️ This comment has been updated with latest results.