The workflow steps were inherited from cq/workflow/components/model/process as described in Extending Workflow Functionality.
AEM 6.4 has all nodes under /libs/cq/workflow/components/model marked as final (granite:FinalArea).What is the 6.4 recommended way to extend the workflow steps with the step dialog customization?
For 6.4:- Extending Workflow Functionality
As suggested by Kautuk, Please check
Extending Workflow Functionality
Workflow step components can be created in the same manner as any other component.
To inherit from one of the (existing) base step components, add the following property to the cq:Componentnode:
AEM 6.4 added the granite:FinalArea to the property jcr:mixinTypes of the nodes above.
If we extend them with sling:resourceSuperType the Pattern Detector reports the Cross-boundary override of final marked path.
The question is how to extend the process without FinalArea violation?