Identity of an existing override the Designer wants to operate on. Populated by the Designer from appContext.ActiveForm when present, or by the Builder's discovery step when it has to look it up.
appContext.ActiveForm
Component.Name — the lineage identity. Must match Spec.name on Modify.
Spec.name
Identity of an existing override the Designer wants to operate on. Populated by the Designer from
appContext.ActiveFormwhen present, or by the Builder's discovery step when it has to look it up.