Index: test/Common/DelftTools.Utils.Tests/TextDocumentBaseTest.cs
===================================================================
diff -u -r5fc71a385897af92ccb092f2f969b5709afab85a -rb51a3197021029e008b2c2b4d000a331f121b03a
--- test/Common/DelftTools.Utils.Tests/TextDocumentBaseTest.cs	(.../TextDocumentBaseTest.cs)	(revision 5fc71a385897af92ccb092f2f969b5709afab85a)
+++ test/Common/DelftTools.Utils.Tests/TextDocumentBaseTest.cs	(.../TextDocumentBaseTest.cs)	(revision b51a3197021029e008b2c2b4d000a331f121b03a)
@@ -1,6 +1,5 @@
 using System.ComponentModel;
 using NUnit.Framework;
-using IEditableObject = DelftTools.Utils.Editing.IEditableObject;
 
 namespace DelftTools.Utils.Tests
 {
@@ -14,7 +13,6 @@
 
             // assert
             Assert.IsInstanceOf<INameable>(docBase);
-            Assert.IsInstanceOf<IEditableObject>(docBase);
             Assert.IsInstanceOf<INotifyPropertyChanged>(docBase);
             Assert.IsFalse(docBase.ReadOnly);
             Assert.IsNull(docBase.Name);
@@ -31,7 +29,6 @@
 
             // assert
             Assert.IsInstanceOf<INameable>(docBase);
-            Assert.IsInstanceOf<IEditableObject>(docBase);
             Assert.IsInstanceOf<INotifyPropertyChanged>(docBase);
             Assert.AreEqual(isReadOnly, docBase.ReadOnly);
             Assert.IsNull(docBase.Name);
Index: test/Common/DelftTools.Utils.Tests/TextDocumentTest.cs
===================================================================
diff -u -r5fc71a385897af92ccb092f2f969b5709afab85a -rb51a3197021029e008b2c2b4d000a331f121b03a
--- test/Common/DelftTools.Utils.Tests/TextDocumentTest.cs	(.../TextDocumentTest.cs)	(revision 5fc71a385897af92ccb092f2f969b5709afab85a)
+++ test/Common/DelftTools.Utils.Tests/TextDocumentTest.cs	(.../TextDocumentTest.cs)	(revision b51a3197021029e008b2c2b4d000a331f121b03a)
@@ -2,7 +2,6 @@
 using System.ComponentModel;
 using DelftTools.TestUtils;
 using NUnit.Framework;
-using IEditableObject = DelftTools.Utils.Editing.IEditableObject;
 
 namespace DelftTools.Utils.Tests
 {
@@ -18,7 +17,6 @@
             // assert
             Assert.IsInstanceOf<INameable>(doc);
             Assert.IsInstanceOf<ICloneable>(doc);
-            Assert.IsInstanceOf<IEditableObject>(doc);
             Assert.IsInstanceOf<INotifyPropertyChanged>(doc);
             Assert.IsFalse(doc.ReadOnly);
             Assert.IsNull(doc.Name);
@@ -36,7 +34,6 @@
             // assert
             Assert.IsInstanceOf<INameable>(doc);
             Assert.IsInstanceOf<ICloneable>(doc);
-            Assert.IsInstanceOf<IEditableObject>(doc);
             Assert.IsInstanceOf<INotifyPropertyChanged>(doc);
             Assert.AreEqual(isReadOnly, doc.ReadOnly);
             Assert.IsNull(doc.Name);