extended ColumnInstance for Conventions

Author: firo222

src/FluentNHibernate/Conventions/Instances/ColumnInstance.cs

@@ -18,5 +18,15 @@ public ColumnInstance(Type parentType, ColumnMapping mapping)
         {
             mapping.Set(x => x.Length, Layer.Conventions, length);
         }
+
+        public new void Index(string indexname)
+        {
+            mapping.Set(x => x.Index, Layer.Conventions, indexname);
+        }
+
+        public new void Default(string defaultvalue)
+        {
+            mapping.Set(x => x.Default, Layer.Conventions, defaultvalue);
+        }
     }
 }

src/FluentNHibernate/Conventions/Instances/IColumnInstance.cs

@@ -5,5 +5,7 @@ namespace FluentNHibernate.Conventions.Instances
     public interface IColumnInstance : IColumnInspector
     {
         new void Length(int length);
+        new void Index(string indexname);
+        new void Default(string defaultvalue);
     }
 }