@Override
	public T get(Object key) {
		if (!(key instanceof Long)) {
			return null;
		}
		long kl = (Long) key;
		if (!keySpan.contains(kl)) {
			return null;
		}
		return store.getObjectAt(kl);
	}
This is the sub-ranged form of {@link DBCachedObjectStoreMap}

<p>
For example, this can be obtained via {@code store.asMap().subMap(...)}.

@param <T> the type of objects in the store
Ghidra/Debug/ProposedUtils/src/main/java/ghidra/util/database/DBCachedObjectStoreSubMap.java