Merges two .plist files into a new one

PlistMerger.cs

using UnityEngine;
using System.Collections;
using UnityEditor.iOS.Xcode;
using System.Collections.Generic;


public class PlistMerger 
{
	public PlistDocument MergePlists(string plistPath, string plistToMergePath) {
		var plist = new PlistDocument();
		plist.ReadFromFile(plistPath);
		
		var plistToMerge = new PlistDocument();
		plistToMerge.ReadFromFile(plistToMergePath);
		Debug.Log(string.Format("Merging {0} into {1}...", System.IO.Path.GetFileName(plistPath), System.IO.Path.GetFileName(plistToMergePath)));
		MergeElement(plist.root.values, plistToMerge.root.values, "");
		return plist;
	}
	
	private void MergeElement(IDictionary<string, PlistElement> values, IDictionary<string, PlistElement> valuesToMerge, string parent) {
		foreach(var elementToMerge in valuesToMerge) {
			if(values.ContainsKey(elementToMerge.Key))
			{
				if(values[elementToMerge.Key] is PlistElementDict) {
					var subValues = values[elementToMerge.Key].AsDict().values;
					var subValuesToMerge = valuesToMerge[elementToMerge.Key].AsDict().values;
					MergeElement(subValues, subValuesToMerge, parent + elementToMerge.Key + "-->");
				}
				else if(values[elementToMerge.Key] is PlistElementArray) {
					var subValues = values[elementToMerge.Key].AsArray().values;
					var subValuesToMerge = valuesToMerge[elementToMerge.Key].AsArray().values;
					subValues.AddRange(subValuesToMerge);
					Debug.Log("Added new array elements to: " + parent + elementToMerge.Key + ". This might needs manual verify...");
				}
				else if(values[elementToMerge.Key] is PlistElementBoolean){
					if(values[elementToMerge.Key].AsBoolean() != elementToMerge.Value.AsBoolean()){
						Debug.LogError(string.Format("Plist merge conflict at: {0} -- Original: {1} -> New: {2}",
						                             parent + elementToMerge.Key, values[elementToMerge.Key].AsBoolean(),
						                             elementToMerge.Value.AsBoolean()));
					}
				}
				else if(values[elementToMerge.Key] is PlistElementInteger) {
					if(values[elementToMerge.Key].AsInteger() != elementToMerge.Value.AsInteger()) {
						Debug.LogError(string.Format("Plist merge conflict at: {0} -- Original: {1} -> New: {2}",
						                             parent + elementToMerge.Key, values[elementToMerge.Key].AsInteger(),
						                             elementToMerge.Value.AsInteger()));
					}
				}
				else if(values[elementToMerge.Key] is PlistElementString) {
					if(values[elementToMerge.Key].AsString() != elementToMerge.Value.AsString()) {
						Debug.LogError(string.Format("Plist merge conflict at: {0} -- Original: {1} -> New: {2}",
						                             parent + elementToMerge.Key, values[elementToMerge.Key].AsString(),
						                             elementToMerge.Value.AsString()));
					}
				}
			}
			else {
				values.Add(elementToMerge);
			}
		}
	}
}