/// <summary>
/// Initializes an instance of <see cref="Saml2SecurityToken"/> from a <see cref="Saml2Assertion"/>.
/// </summary>
/// <param name="assertion">A <see cref="Saml2Assertion"/> to initialize from.</param>
/// <exception cref="ArgumentNullException">if <paramref name="assertion"/> is null.</exception>
public Saml2SecurityToken(Saml2Assertion assertion)
{
Assertion = assertion ?? throw LogArgumentNullException(nameof(assertion));
}