@Override
  public Collection<StoreDescriptor> getStoreDescriptors() {
    String storeName = getOpId();
    String storeFactory = "org.apache.samza.storage.kv.RocksDbKeyValueStorageEngineFactory";

    Serde storeKeySerde = new TimeSeriesKeySerde<>(window.getKeySerde());
    Serde storeValSerde = window.getFoldLeftFunction() == null ? window.getMsgSerde() : window.getWindowValSerde();

    StoreDescriptor descriptor = new StoreDescriptor(storeName, storeFactory, storeKeySerde, storeValSerde, storeName,
        Collections.emptyMap());
    return Collections.singletonList(descriptor);
  }
Get the default triggering interval for this {@link WindowOperatorSpec}

This is defined as the GCD of all triggering intervals across all {@link TimeBasedTrigger}s configured for
this {@link WindowOperatorSpec}.

@return the default triggering interval
samza-core/src/main/java/org/apache/samza/operators/spec/WindowOperatorSpec.java