NSDictionary and NSArray dumping with extension methods

MonoTouch.Utils.Extensions.cs

using System.Collections.Generic;
using System.Diagnostics;
using MonoTouch.Foundation;

namespace MonoTouch.Utils {
	
	public static class Extensions {
		
		public static string Dump(this NSDictionary dictionary, int level = 0) {
			var dump = "";
			if (dictionary != null) {
				foreach (var keyvaluepair in dictionary)
					dump += string.Format("{0}{1}: {2}\n", Tabs(level), keyvaluepair.Key.Stringyfy(), keyvaluepair.Value is NSDictionary || keyvaluepair.Value is NSMutableDictionary ? "\n" + (keyvaluepair.Value as NSDictionary).Dump(level += 1) : keyvaluepair.Value is NSArray ? (keyvaluepair.Value as NSArray).Dump(level) : keyvaluepair.Value.ToString()); 
			}
			if (string.IsNullOrEmpty(dump)) Debug.WriteLine("EMPTY");
			return dump;
		}
		
		public static string Dump(this NSArray array, int level = 0) {
			var arr = new List<string>();
			for (uint i = 0; i < array.Count; i++) {
				var o = MonoTouch.ObjCRuntime.Runtime.GetNSObject(array.ValueAt(i));
				arr.Add(o is NSArray ? (o as NSArray).Dump() : o is NSDictionary || o is NSMutableDictionary ? "\n" + Tabs(level) + (o as NSDictionary).Dump(level) : o.ToString());
			}
			return string.Join(", ", arr.ToArray());
		}
		
		static string Tabs(int count) {
			var tabs = "";
			for (int i = 0; i < count; i++)
				tabs += "\t";
			return tabs;
		}
		
		public static string Stringyfy(this NSObject o) {
			return o.ToString().Stringyfy();
		}
		
		public static string Stringyfy(this string o) {
			return string.Format("\"{0}\"", o);
		}
	}
}