x(const UniValue& params, bool fHelp); extern UniValue signmessage(const UniValue& params, bool fHelp); extern UniValue verifymessage(const UniValue& params, bool fHelp); extern UniValue getreceivedbyaddress(const UniValue& params, bool fHelp); extern UniValue getreceivedbyaccount(const UniValue& params, bool fHelp); extern UniValue getbalance(const UniValue& params, bool fHelp); extern UniValue get