### Question:
SlotKeySerDes { protected static int shardFromSlotKey(String s) { return Integer.parseInt(s.split(",", -1)[2]); }  static SlotKey deserialize(String stateStr); String serialize(SlotKey slotKey); String serialize(Granularity gran, int slot, int shard);  }### Answer:
@Test public void testShardFromSlotKey() { int expectedShard = 1; int shard = SlotKeySerDes.shardFromSlotKey(SlotKey.of(Granularity.MIN_5, 10, expectedShard).toString()); Assert.assertEquals(expectedShard, shard); }