@Override
        public WindowBytesStoreSupplier windowStore(final DslWindowParams params) {
            return Stores.inMemoryWindowStore(
                    params.name(),
                    params.retentionPeriod(),
                    params.windowSize(),
                    params.retainDuplicates()
            );
        }
A {@link DslStoreSuppliers} that supplies all stores backed by an in-memory map
streams/src/main/java/org/apache/kafka/streams/state/BuiltInDslStoreSuppliers.java