diff --git a/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/FileSystemObjectModel.cs b/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/FileSystemObjectModel.cs
index 2b6f753c..4d4afe5f 100644
--- a/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/FileSystemObjectModel.cs
+++ b/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/FileSystemObjectModel.cs
@@ -5,7 +5,7 @@ using UniversalEditor.Accessors;
 
 namespace UniversalEditor.ObjectModels.FileSystem
 {
-	public class FileSystemObjectModel : ObjectModel
+	public class FileSystemObjectModel : ObjectModel, IFileSystemContainer
 	{
 		private ObjectModelReference _omr = null;
 		protected override ObjectModelReference MakeReferenceInternal()
diff --git a/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/Folder.cs b/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/Folder.cs
index 6175c34f..7e11c27e 100644
--- a/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/Folder.cs
+++ b/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/Folder.cs
@@ -4,7 +4,7 @@ using System.Text;
 
 namespace UniversalEditor.ObjectModels.FileSystem
 {
-	public class Folder : IFileSystemObject
+	public class Folder : IFileSystemObject, IFileSystemContainer
 	{
 		public class FolderCollection
 			: System.Collections.ObjectModel.Collection<Folder>
diff --git a/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/IFileSystemContainer.cs b/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/IFileSystemContainer.cs
new file mode 100644
index 00000000..7fdf7638
--- /dev/null
+++ b/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/IFileSystemContainer.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace UniversalEditor.ObjectModels.FileSystem
+{
+	public interface IFileSystemContainer
+	{
+		File.FileCollection Files { get; }
+		Folder.FolderCollection Folders { get; }
+	}
+}
diff --git a/CSharp/Plugins/UniversalEditor.Essential/UniversalEditor.Essential.csproj b/CSharp/Plugins/UniversalEditor.Essential/UniversalEditor.Essential.csproj
index 5cff6a09..5a56fb03 100644
--- a/CSharp/Plugins/UniversalEditor.Essential/UniversalEditor.Essential.csproj
+++ b/CSharp/Plugins/UniversalEditor.Essential/UniversalEditor.Essential.csproj
@@ -88,6 +88,7 @@
     <Compile Include="ObjectModels\FileSystem\File.cs" />
     <Compile Include="ObjectModels\FileSystem\FileSystemObjectModel.cs" />
     <Compile Include="ObjectModels\FileSystem\Folder.cs" />
+    <Compile Include="ObjectModels\FileSystem\IFileSystemContainer.cs" />
     <Compile Include="ObjectModels\FileSystem\IFileSystemObject.cs" />
     <Compile Include="ObjectModels\Markup\MarkupAttribute.cs" />
     <Compile Include="ObjectModels\Markup\MarkupCommentElement.cs" />