Clean Code for bundles/org.eclipse.equinox.preferences

[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
• Make inner classes static where possible
• Replace deprecated calls with inlined content where possible

[github-actions]

Test Results

  669 files  +  223    669 suites  +223   1h 18m 4s ⏱️ + 27m 54s
2 223 tests ±    0  2 176 ✅ +    1   47 💤  -  1  0 ❌ ±0 
6 813 runs  +2 271  6 670 ✅ +2 224  143 💤 +47  0 ❌ ±0 

Results for commit 9c739b1. ± Comparison against base commit 7def4c5.

♻️ This comment has been updated with latest results.