docstr: Verify handling of "py-down" at the bottom of the stack
docstr_tok: ["Verify","handling","of","``","py-down","''","at","the","bottom","of","the","stack"]
code: def test_down_at_bottom(self):
      'Verify handling of "py-down" at the bottom of the stack'
      bt = self.get_stack_trace(
          script=SAMPLE_SCRIPT, cmds_after_breakpoint=["py-down"]
      )
      self.assertEndsWith(bt, "Unable to find a newer python frame\n")
  
imports: import re
  import unittest
  from test.support import python_is_optimized
  from .util import run_gdb, setup_module, DebuggerTests, SAMPLE_SCRIPT
label_desc: Use image node_id 2 for calling the StackNavigationTests obj's underlying member method code with example usage: obj.test_down_at_bottom() without return types