docs: async def _build_state_register(self,
                                      state: BaseState,
                                      request: Request,
                                      responder: Responder) -> Dict:
          """
          Build the next register to store.
  
              - The state is the name of the current state
              - The transition is made by all successive layers present in the
                response.
          """
  
          return {
              Register.STATE: state.name(),
              Register.TRANSITION:
                  await responder.make_transition_register(request),
          }