* gov.nist.javax.sip.SipStackExt#getAuthenticationHelper(gov.nist.javax
* .sip.clientauthutils.AccountManager, javax.sip.header.HeaderFactory)
*/
public AuthenticationHelper getSecureAuthenticationHelper(
SecureAccountManager accountManager, HeaderFactory headerFactory) {
return new AuthenticationHelperImpl(this, accountManager, headerFactory);
}