### Question:
SlotKeySerDes { protected static int slotFromSlotKey(String s) { return Integer.parseInt(s.split(",", -1)[1]); }  static SlotKey deserialize(String stateStr); String serialize(SlotKey slotKey); String serialize(Granularity gran, int slot, int shard);  }### Answer:
@Test public void testSlotFromSlotKey() { int expectedSlot = 1; int slot = SlotKeySerDes.slotFromSlotKey(SlotKey.of(Granularity.MIN_5, expectedSlot, 10).toString()); Assert.assertEquals(expectedSlot, slot); }