sample-process-models/misc/process_group.json

{
    "correlation_keys": null,
    "correlation_properties": null,
    "data_store_specifications": {},
    "description": "Shared Resources",
    "display_name": "Shared Resources",
    "messages": {
        "initiate_task": {
            "correlation_properties": {
                "prop_one": {
                    "retrieval_expressions": [
                        "the_time"
                    ]
                },
                "the_time_id": {
                    "retrieval_expressions": [
                        "the_time"
                    ]
                }
            }
        },
        "task_complete": {
            "correlation_properties": {
                "the_time_id": {
                    "retrieval_expressions": [
                        "the_time"
                    ]
                }
            }
        }
    }
}