Remove producer method introduced in org.activiti.cdi.impl.util.ActivitiServices (rev 3034).
the current implementation requires a cast to ProcessEngineImpl. We cannot rely on the ProcessEngineLookup SPI returning an instance of ProcessEngineImpl.
CommandExecutor is an activiti implementation interface we do not want to expose like this(non-public API).
If we want to expose a CommandExecutor bean, it should be returned by the ProcessEngineLookup-SPI.