@Override
    public synchronized List<ExtPluginConfiguration> listNodeEnhancerConfigurations() {
        return listPluginConfigurations(
                projectConfig.getProjectProperties(),
                NODE_ENHANCER_PROP_PREFIX,
                ServiceNameConstants.NodeEnhancer
        );
    }
@ Override public synchronized List < ExtPluginConfiguration > listNodeEnhancerConfigurations ( ) { return listPluginConfigurations ( projectConfig . getProjectProperties ( ) , NODE_ENHANCER_PROP_PREFIX , ServiceNameConstants . NodeEnhancer ) ; }
list the configurations of node enhancer providers.

@return a list of PluginConfiguration