In KieHelper's getKieContainer() method we have:
 {{InternalKieBuilder kieBuilder = (( InternalKieBuilder ) ks.newKieBuilder( kfs, classLoader ));
kieBuilder.withKModuleModel( kieModuleModel ).buildAll(projectType);
Results results = kieBuilder.getResults();}}
this is fine, and works fine. However, before calling getKieContainer method, one could call verify to check if everything is fine, however it's implementation is:
 {{KieBuilder kieBuilder = ks.newKieBuilder( kfs, classLoader ).buildAll();
return kieBuilder.getResults();}}
which lacks writing of KieModuleModel to KieFileSystem. So, for example, if you're providing a custom evaluator with:
 kModuleModel.setConfigurationProperty("drools.evaluator.custom", CustomEvaluatorDefinition.class.getName());
In previous versions (e.g. 7.28.0), setKieModuleModel method immediately writes kieModuleModel.toXML() to KieFileSystem.