void findKeysAsync(const Namespace& ns, const std::string& keyPrefix, const FindKeysAck& findKeysAck) override;
+ void listKeys(const Namespace& ns, const std::string& pattern, const FindKeysAck& findKeysAck) override;
+
void removeAllAsync(const Namespace& ns, const ModifyAck& modifyAck) override;
//public for UT