code: def test_error_with_int_delay(self):
      x = "a"
  
      def func():
          return x + 1
  
      t_start = time.time()
      with pytest.raises(RuntimeError, match="test failed"):
          retry_function(
              func, "test", "test failed", max_retries=4, retry_delay=1
          )
      time_taken = time.time() - t_start
      expected_time_taken = 1 + 2 + 4
      assert abs(time_taken - expected_time_taken) < self._DELTA
  
file_path: responsible-ai-toolbox/raiutils/tests/test_retry_func.py
imports: import time
  import pytest
  from raiutils.common.retries import retry_function
label_desc: Use image node_id 2 for calling the TestRetryFunction obj's underlying member method code with example usage: obj.test_error_with_int_delay() and returns: unknown