### Question:
SlotStateSerDes { protected static String stateCodeFromStateCol(String s) { return s.split(",", -1)[2]; }  static SlotState deserialize(String stateStr); String serialize(SlotState state); String serialize(Granularity gran, int slot, UpdateStamp.State state);  }### Answer:
@Test public void testStateFromStateCol() { Assert.assertEquals("okay", serDes.stateCodeFromStateCol("metrics_full,1,okay")); }