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NIFI-15641 Add FinalParameters and FinalLocalVariable checkstyle rules#10932

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pvillard31 wants to merge 1 commit intoapache:mainfrom
pvillard31:NIFI-15641
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NIFI-15641 Add FinalParameters and FinalLocalVariable checkstyle rules#10932
pvillard31 wants to merge 1 commit intoapache:mainfrom
pvillard31:NIFI-15641

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Summary

NIFI-15641 Add FinalParameters and FinalLocalVariable checkstyle rules

Added FinalParameters and FinalLocalVariable checks to checkstyle configuration and fixed all violations across the codebase. Parameters and local variables that can be declared final are now declared final. For parameters that are reassigned, applied the *Arg pattern (rename parameter, introduce local variable) to satisfy the checkstyle rule without changing behavior.

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  • Pull Request title starts with Apache NiFi Jira issue number, such as NIFI-00000
  • Pull Request commit message starts with Apache NiFi Jira issue number, as such NIFI-00000
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  • Pull Request based on current revision of the main branch
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  • Build completed using ./mvnw clean install -P contrib-check
    • JDK 21
    • JDK 25

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  • New dependencies are compatible with the Apache License 2.0 according to the License Policy
  • New dependencies are documented in applicable LICENSE and NOTICE files

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Added FinalParameters and FinalLocalVariable checks to checkstyle configuration
and fixed all violations across the codebase. Parameters and local variables
that can be declared final are now declared final. For parameters that are
reassigned, applied the *Arg pattern (rename parameter, introduce local variable)
to satisfy the checkstyle rule without changing behavior.
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