@After
  public void tearDown() {
    geodeConsoleAppender.clearLogEvents();
    configuration.shutdown();
  }
Integration tests for {@link Configuration} and log level changes with
{@link GeodeConsoleAppender}.
geode-log4j/src/integrationTest/java/org/apache/geode/logging/log4j/internal/impl/ConfigurationWithLogLevelChangesIntegrationTest.java