Tomcat tomcat = getTomcatInstance();
tomcat.getConnector().setProperty("processorCache", "1");
tomcat.getConnector().setProperty("maxThreads", "1");
// Must have a real docBase - just use temp
Context ctxt = tomcat.addContext("",
System.getProperty("java.io.tmpdir"));
Tomcat.addServlet(ctxt, "async", new Bug55772Servlet());
ctxt.addServletMapping("/*", "async");