The unique identifier of the transition route group. TransitionRouteGroups.CreateTransitionRouteGroup populates the name automatically. Format: projects/<Project ID>/locations/<Location ID>/agents/<Agent
ID>/flows/<Flow ID>/transitionRouteGroups/<Transition Route Group ID> or projects/<Project ID>/locations/<Location ID>/agents/<Agent
ID>/transitionRouteGroups/<TransitionRouteGroup ID> for agent-level groups.
displayName
string
Required. The human-readable name of the transition route group, unique within the flow. The display name can be no longer than 30 characters.