public void ExplicitlyExpirePrincipal()
{
ISecurityCacheProvider securityCache = SecurityCacheFactory.GetSecurityCacheProvider(defaultInstance);
Assert.IsNotNull(securityCache);
IToken token = securityCache.SavePrincipal(principal);
Assert.IsNotNull(token);
Assert.IsNotNull(token.Value);
securityCache.ExpirePrincipal(token);
IPrincipal cachedPrincipal = securityCache.GetPrincipal(token);
Assert.IsNull(cachedPrincipal);
}