recipes-phosphor/inventory/phosphor-inventory-manager-assettag/assettag.yaml

events:
    - name: Creating AssetTag at startup
      description: >
          Create /system at startup and populate the AssetTag property with
          empty string.
      type: startup
      actions:
          - name: createObjects
            objs:
             /system:
                xyz.openbmc_project.Inventory.Decorator.AssetTag:
                  AssetTag:
                    value: ""
                    type: string