code: def setup_blueprint(self):
          
  
          # Register endpoints.
          self.blueprint.add_url_rule("/", "status", self.status)
          self.blueprint.add_url_rule("/healthy", "health", self.healthy)
          self.blueprint.add_url_rule("/ready", "ready", self.ready)
          self.blueprint.add_url_rule("/threads", "threads", self.threads_bt)
docs: Initialize the blueprint.