Find all types that implements interface IController

finder.cs

private static IEnumerable<Type> LoadControllers()
{
    return typeof (IController).GetTypeInfo().Assembly.DefinedTypes
        .Where(type => type.ImplementedInterfaces.Any(x => x == typeof(IController)));
}

finder_universale.cs

private static IEnumerable<Type> FindTypesImplements<T>()
{
    return typeof (T).GetTypeInfo().Assembly.DefinedTypes
        .Where(type => type.ImplementedInterfaces.Any(x => x == typeof(T)));
}