code: def test_startswith_nested(self):
      def f():
          return "123"
  
      def g():
          return "456"
  
      assert f().startswith(g())
  
imports: import pytest
  from pytest import raises
label_desc: Use image node_id 5 for calling the TestMoreErrors obj's underlying member method code with example usage: obj.test_startswith_nested() and returns: str, str