gistfile1.txt

    class Program
    {
        static void Main(string[] args)
        {
            var overloads = typeof(EntityFrameworkQueryableExtensions)
                .GetMethods().Where(method => method.Name == "Include");

            var include2 = overloads
                .Where(method => method
                    .GetParameters()
                    .Select(param => param.ParameterType.IsGenericType ? param.ParameterType.GetGenericTypeDefinition() : param.ParameterType)
                    .SequenceEqual(new[] { typeof(IQueryable<>), typeof(string) }));
        }
    }

    public static class EntityFrameworkQueryableExtensions
    {
        public static void Include<TEntity, TProperty>(this IQueryable<TEntity> source, Expression<Func<TEntity, TProperty>> navigationPropertyPath) where TEntity : class
        {

        }

        public static void Include<TEntity>(this IQueryable<TEntity> source, string navigationPropertyPath) where TEntity : class
        {

        }
    }