@Override
            public void execute(RawKVStore kvStore, KVStoreClosure closure) {
                kvStore.containsKey(key, closure);
            }
Test method: {@link MemoryRawKVStore#containsKey(byte[], KVStoreClosure)}
jraft-rheakv/rheakv-core/src/test/java/com/alipay/sofa/jraft/rhea/storage/memorydb/MemoryKVStoreTest.java