### Question:
SystemConfig { public static Properties getProperties() { return properties; }  static Properties getProperties(); static Properties getSwitchProperties(); static Map<String, String> getLoadBalanceModeMap(); static int getProviderMaxConnetions(); static void setProviderMaxConnetions(int providerMaxConnetions);  }### Answer:
@Test public void getProperties() throws Exception { Properties pros = SystemConfig.getProperties(); if (pros != null) { String retryNum = pros.getProperty("zookeeper.retryNum"); Assert.assertEquals("5", retryNum); } }