public void addTransformers(TomcatConfig config) {
        // Add server metadata
        transformTemplate.transform("org.apache.catalina.core.StandardService", StandardServiceTransform.class);
        transformTemplate.transform("org.apache.catalina.connector.Connector", ConnectorTransform.class);
        transformTemplate.transform("org.apache.catalina.loader.WebappLoader", WebappLoaderTransform.class);
        // Add async listener. Servlet 3.0
        transformTemplate.transform("org.apache.catalina.connector.Request", RequestTransform.class);
        // Hide pinpoint headers & Trace HTTP response status code
        transformTemplate.transform("org.apache.catalina.connector.RequestFacade", RequestFacadeTransform.class);
        // Entry Point
        transformTemplate.transform("org.apache.catalina.core.StandardHostValve", StandardHostValveTransform.class);
    }
@author Jongho Moon
@author jaehong.kim
agent-module/plugins/tomcat/src/main/java/com/navercorp/pinpoint/plugin/tomcat/TomcatPlugin.java