old_contents: from indy_common.types import Request
  
  
  def test_request_all_identifiers_returns_empty_list_for_request_without_signatures():
      req = Request()
  
      assert req.all_identifiers == []
new_contents: from plenum.common.request import Request
  
  
  def test_request_all_identifiers_returns_empty_list_for_request_without_signatures():
      req = Request()
  
      assert req.all_identifiers == []
subject: Fix wrong import in test