using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine( true  == ShouldSkip(typeof(Identifiable)));

        Console.WriteLine( true  == ShouldSkip(typeof(Identifiable<int>)));

        Console.WriteLine( true  == ShouldSkip(typeof(IIdentifiable)));

        Console.WriteLine( true  == ShouldSkip(typeof(IMongoDbIdentifiable)));

        Console.WriteLine( false == ShouldSkip(typeof(Article)));

        Console.WriteLine( false == ShouldSkip(typeof(string)));

        Console.WriteLine( false == ShouldSkip(typeof(int)));

        Console.WriteLine( false == ShouldSkip(typeof(ComplexType)));

    }

​

    private static bool ShouldSkip(Type type)

    {

        return type.IsInterface || type.IsAbstract || !typeof(IIdentifiable).IsAssignableFrom(type);

​

        // return type == typeof(IIdentifiable) || (typeof(IIdentifiable).IsAssignableFrom(type) && type.IsAbstract);

    }

}

​

public interface IIdentifiable { }

public interface IMongoDbIdentifiable : IIdentifiable { }

public abstract class Identifiable : Identifiable<int> { }

public abstract class Identifiable<T> : IIdentifiable { }

public class Article : Identifiable { }

public class ComplexType { }