Added the new functions in the wrapper as well

wrappers/modelverse.py

@@ -960,3 +960,11 @@ def service_poll(port):
 def user_name(user, username):
     """Change a user's name."""
     raise NotImplementedError()
+
+def remove_metamodel(model_name, metamodel_name):
+    """Remove a metamodel for a model."""
+    raise NotImplementedError()
+
+def add_metamodel(model_name, metamodel_name, partial_type_mapping=None):
+    """Add a metamodel for a model."""
+    raise NotImplementedError()