Java: add generated stubs back, but in a different directory from existing apache-http-5 stubs

java/ql/test/stubs/apache-http-5-Generated/javax/servlet/AsyncContext.java

@@ -0,0 +1,31 @@
+// Generated automatically from javax.servlet.AsyncContext for testing purposes
+
+package javax.servlet;
+
+import javax.servlet.AsyncListener;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+
+public interface AsyncContext
+{
+    <T extends AsyncListener> T createListener(java.lang.Class<T> p0);
+    ServletRequest getRequest();
+    ServletResponse getResponse();
+    boolean hasOriginalRequestAndResponse();
+    long getTimeout();
+    static String ASYNC_CONTEXT_PATH = null;
+    static String ASYNC_MAPPING = null;
+    static String ASYNC_PATH_INFO = null;
+    static String ASYNC_QUERY_STRING = null;
+    static String ASYNC_REQUEST_URI = null;
+    static String ASYNC_SERVLET_PATH = null;
+    void addListener(AsyncListener p0);
+    void addListener(AsyncListener p0, ServletRequest p1, ServletResponse p2);
+    void complete();
+    void dispatch();
+    void dispatch(ServletContext p0, String p1);
+    void dispatch(String p0);
+    void setTimeout(long p0);
+    void start(Runnable p0);
+}