title: Issues with tutorial - Serializing data from/to disk
body: <p>So I'm trying to work through the Catel 'getting started' examples here:</p>
  
  <p><a href="https://catelproject.atlassian.net/wiki/display/CTL/Getting+started+with+WPF" rel="nofollow">https://catelproject.atlassian.net/wiki/display/CTL/Getting+started+with+WPF</a></p>
  
  <p>But I'm getting some errors in visual studio on step 3 (Serializing data from/to disk) - <a href="https://catelproject.atlassian.net/wiki/pages/viewpage.action?pageId=15630363" rel="nofollow">https://catelproject.atlassian.net/wiki/pages/viewpage.action?pageId=15630363</a></p>
  
  <p>I create a 'top container' model called 'Settings' and a 'child class' of this called 'Global' (pretty much exactly the same as the tutorial except for less properties and different model names).</p>
  
  <p>I create an interface based on the example:</p>
  
  <pre><code>using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
  using System.Threading.Tasks;
  using App.Models;
  
  namespace App.Services.Interfaces
  {
      public interface IGlobalService
      {
          IEnumerable&lt;Global&gt; LoadGlobals();
          void SaveGlobals(IEnumerable&lt;Global&gt; globals);
      }
  }
  </code></pre>
  
  <p>Then I create the service implementation:</p>
  
  <pre><code>using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
  using System.Threading.Tasks;
  using System.IO;
  using Catel.Collections;
  using Catel.Data;
  using App.Models;
  using App.Services.Interfaces;
  
  namespace App.Services
  {
      public class GlobalService : IGlobalService
      {
          private readonly string _path;
  
          public GlobalService()
          {
              string directory = Catel.IO.Path.GetApplicationDataDirectory("CatenaLogic", "WPF.GettingStarted");
  
              _path = Path.Combine(directory, "global.xml");
          }
  
          public IEnumerable&lt;Global&gt; LoadGlobals()
          {
              if (!File.Exists(_path))
              {
                  return new Global[] { };
              }
  
              using (var fileStream = File.Open(_path, FileMode.Open))
              {
                  var settings = Settings.Load(fileStream, SerializationMode.Xml);
                  return settings.Globals;
              }
          }
  
          public void SaveGlobals(IEnumerable&lt;Global&gt; globals)
          {
              var settings = new Settings();
              settings.Globals.ReplaceRange(globals);
              settings.Save(_path, SerializationMode.Xml);
          }
      }
  } 
  </code></pre>
  
  <p>Visual studio then throws 2 errors and a warning:</p>
  
  <blockquote>
    <p>Error CS0619  'SavableModelBase.Load(Stream,
    SerializationMode)' is obsolete: 'Please use <code>Load(Stream,
    SerializationMode, ISerializationConfiguration)</code> instead. Will be
    removed in version
    5.0.0.'   </p>
    
    <p>Error CS0619  'SavableModelBase.Save(string,
    SerializationMode)' is obsolete: 'Please use <code>Save(string,
    SerializationMode, ISerializationConfiguration)</code> instead. Will be
    removed in version 5.0.0.'</p>
    
    <p>Warning   CS0618  'CollectionExtensions.ReplaceRange(ObservableCollection,
    IEnumerable)' is obsolete: 'Please use <code>ReplaceRange(this
    ICollection&lt;T&gt;, IEnumerable&lt;T&gt;)</code> instead. Will be treated as an error
    from version 5.0.0. Will be removed in version 5.0.0.'</p>
  </blockquote>
  
  <p>So far all research I have done on this has come up blank. What is 'ISerializationConfiguration' and how do I implement it? Am I missing something obvious?</p>
  
  <p>Setup is:</p>
  
  <ul>
  <li>Visual Studio 2015 Community (14.0.25425.01 Update 3)</li>
  <li>Project targeting .NET 4.5.2</li>
  <li>Project initialized using New > Online > WPF application using Catel</li>
  <li>NuGet:
  
  <ul>
  <li>Catel.Core 4.5.3</li>
  <li>Catel.Extensions.Controls 4.5.3</li>
  <li>Catel.MVVM 4.5.3</li>
  <li>Catel.Fody 2.14.0</li>
  </ul></li>
  </ul>
  
  <p>Any help would be much appreciated.</p>