SONARJAVA-6613 Implement new rule S9021#5784

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romainbrenguier wants to merge 5 commits into

new-rule/SONARJAVA-6613-S9021

Commits on Jul 14, 2026

Implement new rule S9021
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Fix CI: Fixed compilation error in ConfigurationClassShouldNotBeFinalCheck by replacing invalid Tree.Kind.MODIFIER with ModifiersUtils.findModifier()
romainbrenguier
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Fix CI failures
romainbrenguier
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Fix CI: Removed incorrect column marker '// ^^^^^' from ConfigurationClassShouldNotBeFinalCheckSample.java that pointed to column 8 (position of old 'public' modifier) after 'public' was remove…
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Document intentional limitation to direct @Configuration annotations

romainbrenguier
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claude
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