PoC: Add rewrite support for errorprone.refasterrules

Author: Vincent Potucek

.github/workflows/build.yml

@@ -121,7 +121,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           persist-credentials: false
-          ref: ${{ github.sha }}  # this is the default, just being explicit.
+          ref: ${{ github.sha }} # this is the default, just being explicit.
       - name: Setup Python
         uses: ./.github/actions/setup-python
       - name: Setup Gradle
@@ -140,7 +140,7 @@ jobs:
         # --scan:         Publish the build scan. This will only work on PRs from apache/kafka and trunk
         # --no-scan:      For public fork PRs, we won't attempt to publish the scan
         run: |
-          ./gradlew --build-cache --info $SCAN_ARG check releaseTarGz -x test
+          ./gradlew check rewriteDryRun --build-cache --info $SCAN_ARG releaseTarGz -x test
       - name: Archive check reports
         if: always()
         uses: actions/upload-artifact@v4

README.md

@@ -201,7 +201,17 @@ For experiments (or regression testing purposes) add `-PcheckstyleVersion=X.y.z`
 #### Spotless ####
 The import order is a part of static check. please call `spotlessApply` to optimize the imports of Java codes before filing pull request.
 
-    ./gradlew spotlessApply
+`./gradlew spotlessApply`
+
+#### Rewrite
+The build system incorporates [Moderne](https://moderne.io/) rewrite capabilities for automated code transformations.
+
+- **Convention** (e.g., JUnit's naming rules)
+- **Refactor** safely (e.g., rename methods, migrate APIs)
+- **Modernize** (e.g., Java 8 → Java 17 features)
+- **Patterns** (e.g., replace `Vector` with `ArrayList`)
+
+`./gradlew rewriteRun`
 
 #### Spotbugs ####
 Spotbugs uses static analysis to look for bugs in the code.