Refresh Claims for AuthenticationManager OWIN

gistfile1.txt

public async Task Refresh(ClaimsIdentity claim, bool? rememberMe)
{
    var current = _authenticationManager.User;
    var remember = current.Claims.FirstOrDefault(x => x.Type == ClaimTypes.IsPersistent);

    if (rememberMe.HasValue)  {
        // remember the "remember me" :)
        claim.AddClaim(new Claim(ClaimTypes.IsPersistent, rememberMe.ToString()));
    }
    else if (claim != null) {
        claim.AddClaim(remember);
        rememberMe = bool.Parse(remember.Value);
    }
    else { 
        rememberMe = false;
        claim.AddClaim(new Claim(ClaimTypes.IsPersistent, rememberMe.ToString()));
    }

    _authenticationManager.SignOut(DefaultAuthenticationTypes.ApplicationCookie);
    _authenticationManager.SignIn(new AuthenticationProperties {
        IsPersistent = rememberMe.Value
    }, claim);
}