_mapper = new ObjectMapper();
_mapper.configure(SerializationConfig.Feature.INDENT_OUTPUT, true);
Action[] supportedActions = {
new ListAuthenticationProviderAttributes(),
new ListBrokerAttribute(Broker.SUPPORTED_VIRTUALHOST_STORE_TYPES, "ListMessageStoreTypes"),
new ListBrokerAttribute(Broker.SUPPORTED_VIRTUALHOST_TYPES, "ListVirtualHostTypes"),
new ListBrokerAttribute(Broker.SUPPORTED_PREFERENCES_PROVIDERS_TYPES, "ListPreferencesProvidersTypes"),
new ListBrokerAttribute(Broker.PRODUCT_VERSION, "version"),
new ListGroupProviderAttributes(),
new ListAccessControlProviderAttributes(),
new PluginClassProviderAction(),
new ListTimeZones()
};