protected Properties getConfig() {
    Properties config = new Properties();
    config.setProperty(LOCATORS, "");
    config.setProperty(MCAST_PORT, "0");
    return config;
  }
Tests transaction expiration functionality

@since GemFire 4.0
geode-core/src/integrationTest/java/org/apache/geode/TXExpirationIntegrationTest.java