code: def load_environment_vars(self, prefix=SANIC_PREFIX):
          
          for k, v in os.environ.items():
              if k.startswith(prefix):
                  _, config_key = k.split(prefix, 1)
                  try:
                      self[config_key] = int(v)
                  except ValueError:
                      try:
                          self[config_key] = float(v)
                      except ValueError:
                          try:
                              self[config_key] = strtobool(v)
                          except ValueError:
                              self[config_key] = v
docs: Looks for prefixed environment variables and applies
          them to the configuration if present.