params.put("template", objectWrapper.wrap("myTemplate"));
params.put("role", objectWrapper.wrap("myRole"));
params.put("extends", objectWrapper.wrap("myExtends"));
params.put("preparer", objectWrapper.wrap("myPreparer"));
tModel.start(composeStack, "myName", "myTemplate", "myRole", "myExtends", "myPreparer");
tModel.end(container, composeStack, env);
body.render(isA(NullWriter.class));
replay(tModel, body, container);
fmModel.execute(env, params, null, body);