NoDd* classes

Hello,
did you tried use NoDb* classes to configure working project with real process defitions please?
Because I am getting exceptions below when I did.
```
java.lang.NullPointerException
at org.flowable.common.engine.impl.db.DbSqlSession.selectListWithRawParameter(DbSqlSession.java:202) ~[flowable-engine-common-6.4.2.jar:6.4.2]

```
```
org.flowable.common.engine.api.FlowableException: couldn't instantiate class ${something}

at org.flowable.common.engine.impl.util.ReflectUtil.instantiate(ReflectUtil.java:140)
at org.flowable.engine.impl.bpmn.helper.AbstractClassDelegate.defaultInstantiateDelegate(AbstractClassDelegate.java:64)

```

Best Regards,

Petr