params.put("templateExpression", objectWrapper.wrap("myTemplateExpression"));
params.put("role", objectWrapper.wrap("myRole"));
params.put("preparer", objectWrapper.wrap("myPreparer"));
tModel.start(container, env);
tModel.end(container, "myName", "myTemplate", "myTemplateType",
"myTemplateExpression", "myRole", "myPreparer", env);
body.render(isA(NullWriter.class));
replay(tModel, body, container, attribute);
fmModel.execute(env, params, null, body);