17   def callback(foo): ...  function
18   handler = ctx.attach_diagnostic_handler(callback)
33   def callback(foo): ...  function
34   handler = ctx.attach_diagnostic_handler(callback)
43   def callback(foo): ...  function
44   with ctx.attach_diagnostic_handler(callback) as handler:
52   def callback(foo): ...  function
53   with ctx.attach_diagnostic_handler(callback) as handler:
63   def callback(d):  function
67   handler = ctx.attach_diagnostic_handler(callback)
78   def callback(d):  function
82   handler = ctx.attach_diagnostic_handler(callback)
92   def callback(d):  function
100   handler = ctx.attach_diagnostic_handler(callback)
109   def callback(d):  function
111   handler = ctx.attach_diagnostic_handler(callback)
122   def callback(d):  function
125   handler = ctx.attach_diagnostic_handler(callback)