public bool TryGetSecurityPolicyDriver(ICollection<XmlElement> assertions, out WSSecurityPolicy securityPolicy)
            {
                securityPolicy = null;

                for (int i = 0; i < this.drivers.Count; ++i)
                {
                    if (this.drivers[i].CanImportAssertion(assertions))
                    {
                        securityPolicy = this.drivers[i];
                        return true;
                    }
                }

                return false;
            }
 public static bool TryGetSecurityPolicyDriver(ICollection<XmlElement> assertions, out WSSecurityPolicy securityPolicy)
 {
     SecurityPolicyManager policyManager = new SecurityPolicyManager();
     return policyManager.TryGetSecurityPolicyDriver(assertions, out securityPolicy); 
 }