diff --git a/src/funcTest/groovy/com/github/jengelman/gradle/plugins/shadow/util/repo/maven/MavenFileModule.groovy b/src/funcTest/groovy/com/github/jengelman/gradle/plugins/shadow/util/repo/maven/MavenFileModule.groovy
deleted file mode 100644
index 80d482224..000000000
--- a/src/funcTest/groovy/com/github/jengelman/gradle/plugins/shadow/util/repo/maven/MavenFileModule.groovy
+++ /dev/null
@@ -1,46 +0,0 @@
-package com.github.jengelman.gradle.plugins.shadow.util.repo.maven
-
-import org.jetbrains.annotations.NotNull
-
-class MavenFileModule extends AbstractMavenModule {
-    private boolean uniqueSnapshots = true
-
-    MavenFileModule(File moduleDir, String groupId, String artifactId, String version) {
-        super(moduleDir, groupId, artifactId, version)
-    }
-
-    @Override
-    boolean getUniqueSnapshots() {
-        return uniqueSnapshots
-    }
-
-    @Override
-    String getMetaDataFileContent() {
-        """
-            <metadata>
-              <!-- ${getArtifactContent()} -->
-              <groupId>$groupId</groupId>
-              <artifactId>$artifactId</artifactId>
-              <version>$version</version>
-              <versioning>
-                <snapshot>
-                  <timestamp>${timestampFormat.format(publishTimestamp)}</timestamp>
-                  <buildNumber>$publishCount</buildNumber>
-                </snapshot>
-                <lastUpdated>${updateFormat.format(publishTimestamp)}</lastUpdated>
-              </versioning>
-            </metadata>
-        """.stripIndent()
-    }
-
-    @Override
-    protected void onPublish(@NotNull File file) {
-        sha1File(file)
-        md5File(file)
-    }
-
-    @Override
-    protected boolean publishesMetaDataFile() {
-        uniqueSnapshots && version.endsWith("-SNAPSHOT")
-    }
-}
diff --git a/src/intiTest/kotlin/com/github/jengelman/gradle/plugins/shadow/util/repo/maven/MavenFileModule.kt b/src/intiTest/kotlin/com/github/jengelman/gradle/plugins/shadow/util/repo/maven/MavenFileModule.kt
new file mode 100644
index 000000000..81b23ec0e
--- /dev/null
+++ b/src/intiTest/kotlin/com/github/jengelman/gradle/plugins/shadow/util/repo/maven/MavenFileModule.kt
@@ -0,0 +1,43 @@
+package com.github.jengelman.gradle.plugins.shadow.util.repo.maven
+
+import java.io.File
+import org.intellij.lang.annotations.Language
+import org.jetbrains.annotations.NotNull
+
+class MavenFileModule(
+  moduleDir: File,
+  groupId: String,
+  artifactId: String,
+  version: String,
+) : AbstractMavenModule(moduleDir, groupId, artifactId, version) {
+
+  override fun getUniqueSnapshots(): Boolean = uniqueSnapshots
+
+  @Language("XML")
+  override fun getMetaDataFileContent(): String {
+    return """
+      <metadata>
+        <!-- $artifactContent -->
+        <groupId>$groupId</groupId>
+        <artifactId>$artifactId</artifactId>
+        <version>$version</version>
+        <versioning>
+          <snapshot>
+            <timestamp>${timestampFormat.format(publishTimestamp)}</timestamp>
+            <buildNumber>$publishCount</buildNumber>
+          </snapshot>
+          <lastUpdated>${updateFormat.format(publishTimestamp)}</lastUpdated>
+        </versioning>
+      </metadata>
+    """.trimIndent()
+  }
+
+  override fun onPublish(@NotNull file: File) {
+    sha1File(file)
+    md5File(file)
+  }
+
+  override fun publishesMetaDataFile(): Boolean {
+    return uniqueSnapshots && version.endsWith("-SNAPSHOT")
+  }
+}