private void WriteControlScheme(ControlScheme scheme, XmlWriter writer)
        {
            writer.WriteStartElement("ControlScheme");
            writer.WriteAttributeString("name", scheme.Name);
            writer.WriteAttributeString("id", scheme.UniqueID);
            foreach (var action in scheme.Actions)
            {
                WriteInputAction(action, writer);
            }

            writer.WriteEndElement();
        }