question: mock implementation of the corresponding protocolproviderservice method . concode_field_sep String PROTO_NAME concode_elem_sep Map<String,OperationSet> supportedOperationSets concode_elem_sep MockPersistentPresenceOperationSet mockPresOpSet concode_elem_sep AccountID accountID concode_field_sep TransportProtocol getTransportProtocol concode_elem_sep ProtocolIcon getProtocolIcon concode_elem_sep boolean isRegistrationRequiredForCalling concode_elem_sep void unregister concode_elem_sep void unregister concode_elem_sep T getOperationSet concode_elem_sep void removeRegistrationStateChangeListener concode_elem_sep Map<String,OperationSet> getSupportedOperationSets concode_elem_sep String getProtocolDisplayName concode_elem_sep String getProtocolName concode_elem_sep boolean validateContactAddress concode_elem_sep AccountID getAccountID concode_elem_sep void addRegistrationStateChangeListener concode_elem_sep boolean isRegistered concode_elem_sep Collection<Class<? extends OperationSet>> getSupportedOperationSetClasses concode_elem_sep boolean isSignalingTransportSecure concode_elem_sep void shutdown concode_elem_sep void register
target: RegistrationState function ( ) { return RegistrationState . REGISTERED ; }