java.io.Serializable createAuthN(SsoContext ssoContext,
javax.servlet.http.HttpServletRequest req,
javax.servlet.http.HttpServletResponse resp,
java.lang.String resumePath)PingFederate invokes the createAuthN() method during the processing of an SSO
request to establish a security context in the external application for the user. This method
is similar to the IdpAuthenticationAdapter.lookupAuthN() method in terms of
the objects passed to it and its support for asynchronous requests via the
HttpServletResponse and resumePath parameters. This method
also accepts an SsoContext object, which has access to information such as
user attributes and the target destination URL.