Index: dam engine/trunk/src/Deltares.DamEngine.Interface/Interface.cs
===================================================================
diff -u -r302 -r305
--- dam engine/trunk/src/Deltares.DamEngine.Interface/Interface.cs	(.../Interface.cs)	(revision 302)
+++ dam engine/trunk/src/Deltares.DamEngine.Interface/Interface.cs	(.../Interface.cs)	(revision 305)
@@ -8,5 +8,31 @@
 {
     public class Interface
     {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Interface"/> class.
+        /// </summary>
+        /// <param name="modelInput">The model input.</param>
+        public Interface(string modelInput)
+        {
+            
+        }
+
+        /// <summary>
+        /// Validates the model.
+        /// </summary>
+        /// <returns>Valdiation messages in an XML string</returns>
+        public string Validate()
+        {
+            return null;
+        }
+
+        /// <summary>
+        /// Runs this instance.
+        /// </summary>
+        /// <returns>Errors and warnings in an XML string</returns>
+        public string Run()
+        {
+            return null;
+        }
     }
 }