@Before
  public void setUp() {
    systemOutRule.clearLog();
    systemErrRule.clearLog();

    logger = LogService.getLogger();
    logMessage = "Logging in " + testName.getMethodName();
    listAppender = loggerContextRule.getListAppender("CUSTOM");
  }
Integration tests for {@link LogService} with custom logging configuration.
geode-log4j/src/integrationTest/java/org/apache/geode/logging/log4j/internal/impl/LogServiceWithCustomLogConfigIntegrationTest.java