Support boolean wrapper initializers

templates/wrapperdefinition.inc

@@ -27,8 +27,10 @@
         return {{ class.fullName }}(value.toFloat());
     {% case "string" %}
         return {{ class.fullName }}(value.toString());
+    {% case "boolean" %}
+        return {{ class.fullName }}(value.toBool());
     {% default %}
-        // Unsupported wrapped type initializer {{ field.type.type.sourceType }}!
+        // Unsupported wrapped type initializer {{ class.sourceType }}!
     {% endswitch %}
 }