code: def connection(self):
          
  
          ctx = stack.top.app
          if ctx is not None:
              if not hasattr(ctx, 'snow'):
                  if self._client_type_oauth:
                      if not self._token_updater:
                          warnings.warn("No token updater has been set. Token refreshes will be ignored.")
  
                      client = self._get_oauth_client()
                  else:
                      client = self._get_basic_client()
  
                  if self._parameters:
                      # Set parameters passed on app init
                      client.parameters = self._parameters
  
                  ctx.snow = client
  
              return ctx.snow
docs: Snow connection instance, stores a `pysnow.Client` instance and `pysnow.Resource` instances
  
          Creates a new :class:`pysnow.Client` object if it doesn't exist in the app slice of the context stack
  
          :returns: :class:`pysnow.Client` object