Method getDescendants

src/QLContext.actor.cpp:205–214

	}

	GenFutureStream<KeyValue> getDescendants(Reference<DocTransaction> tr,
	                                         DataKey key,
	                                         StringRef begin,
	                                         StringRef end,
	                                         Reference<FlowLock> flowControlLock) override {
		PromiseStream<KeyValue> p;
		GenFutureStream<KeyValue> r(p.getFuture());
		r.actor = FDBPlugin_getDescendants(key, tr, begin, end, p, flowControlLock);
		return r;
	}

	void set(Reference<DocTransaction> tr, DataKey key, ValueRef value) override {
		std::string k = getFDBKey(key);