[BAEL-4823] Maven plugin management (#10957)

* [BAEL-4823] Maven plugin management

* [BAEL-4823] Minor code cleanup

maven-modules/plugin-management/submodule-1/src/test/java/com/baeldung/CopiesAdditionalResourcesUnitTest.java

@@ -0,0 +1,19 @@
+package com.baeldung;
+
+import org.junit.jupiter.api.Test;
+
+import java.io.File;
+import java.net.URL;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class CopiesAdditionalResourcesUnitTest {
+
+    @Test
+    void givenAdditionalResource_whenCopyingFromSourceToDestination_thenShouldBeInDestination() {
+        URL resource = getClass().getClassLoader().getResource("json/include.json");
+        File destinationFile = new File(resource.getFile());
+
+        assertTrue(destinationFile.exists());
+    }
+}