/// <summary>
/// Applies permissions represented by this attribute to an action instance, via the specified <see cref="IActionBuildingContext"/>.
/// </summary>
public override void Apply(IActionBuildingContext builder)
{
// if this is the first occurence of this attribute, create the parent spec
if (builder.Action.PermissionSpecification == null)
builder.Action.PermissionSpecification = new OrSpecification();
// combine the specified tokens with AND logic
AndSpecification and = new AndSpecification();
foreach (string token in _authorityTokens)
{
and.Add(new PrincipalPermissionSpecification(token));
}
// combine this spec with any previous occurence of this attribute using OR logic
((OrSpecification)builder.Action.PermissionSpecification).Add(and);
}
