private File createJarWithClass(String fileName, String className) throws IOException {
    String stringBuilder = "package integration.parent;" + "public class " + className + " {}";
    File jarFile = new File(temporaryFolder.getRoot(), fileName);
    if (jarFile.exists()) {
      jarFile = new File(temporaryFolder.newFolder(), fileName);
    }
    JarBuilder jarBuilder = new JarBuilder();
    jarBuilder.buildJar(jarFile, stringBuilder);
    return jarFile;
  }
Specifies no parent to ensure that this loader generates the named class.
geode-core/src/integrationTest/java/org/apache/geode/internal/classloader/ClassPathLoaderIntegrationTest.java