source: class SnowflakeIDGenImplTest {
  
      @Test
      public void testGetId() {
  
target:         Properties properties = PropertyFactory.getProperties();
  
          IDGen idGen = new SnowflakeIDGenImpl(properties.getProperty("leaf.zk.list"), 8080);
          for (int i = 1; i < 1000; ++i) {
              Result r = idGen.get("a");
              System.out.println(r);
          }
      }
  
  }