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public class KafkaStreams {
    public <T> T store(final String storeName, final QueryableStoreType<T> queryableStoreType);
}
 
public class CompositeReadOnlyKeyValueStore<K, V> implements ReadOnlyKeyValueStore<K, V> {
    public V get(final K key);
    public KeyValueIterator<K, V> range(final K from, final K to);
    public KeyValueIterator<K, V> all();
    public long approximateNumEntries();
}
 
public class CompositeReadOnlySessionStore<K, V> implements ReadOnlySessionStore<K, V> {
    public KeyValueIterator<Windowed<K>, V> fetch(final K key);
    public KeyValueIterator<Windowed<K>, V> fetch(final K from, final K to);
}
 
public class CompositeReadOnlyWindowStore<K, V> implements ReadOnlyWindowStore<K, V> {
    public WindowStoreIterator<V> fetch(final K key, final long timeFrom, final long timeTo);
    public KeyValueIterator<Windowed<K>, V> fetch(final K from, final K to, final long timeFrom, final long timeTo);
    public KeyValueIterator<Windowed<K>, V> all();
    public KeyValueIterator<Windowed<K>, V> fetchAll(final long timeFrom, final long timeTo);
}
 
class DelegatingPeekingKeyValueIterator<K, V> implements KeyValueIterator<K, V>, PeekingKeyValueIterator<K, V> {
    public synchronized boolean hasNext();
    public synchronized KeyValue<K, V> next();
    public KeyValue<K, V> peekNext();
}
 
class MeteredWindowStoreIterator<V> implements WindowStoreIterator<V> {
    public boolean hasNext();
    public KeyValue<Long, V> next();
    public Long peekNextKey()
}