private SecurityContextSecurityToken(SecurityContextSecurityToken from)
{
ReadOnlyCollection <IAuthorizationPolicy> authorizationPolicies = SecurityUtils.CloneAuthorizationPoliciesIfNecessary(from._authorizationPolicies);
_id = from._id;
Initialize(from.ContextId, from._key, from._tokenEffectiveTime, from._tokenExpirationTime, authorizationPolicies, from.IsCookieMode, from.KeyGeneration, from.KeyEffectiveTime, from.KeyExpirationTime);
CookieBlob = from.CookieBlob;
BootstrapMessageProperty = (from.BootstrapMessageProperty == null) ? null : (SecurityMessageProperty)from.BootstrapMessageProperty.CreateCopy();
}