code: def to_vars_dict(self):
          
          return {
              'aws_access_key_id':      self._access_key,
              'aws_secret_access_key':  self._secret_key,
              'aws_region':             self._region_name,
              'aws_vpc_name':           (self._vpc or ''),
              'aws_vpc_id':             (self._vpc_id or ''),
          }
docs: Return local state which is relevant for the cluster setup process.