19     def callback(foo):  function
22     handler = ctx.attach_diagnostic_handler(callback)
38     def callback(foo):  function
41     handler = ctx.attach_diagnostic_handler(callback)
51     def callback(foo):  function
54     with ctx.attach_diagnostic_handler(callback) as handler:
63     def callback(foo):  function
66     with ctx.attach_diagnostic_handler(callback) as handler:
77     def callback(d):  function
84     handler = ctx.attach_diagnostic_handler(callback)
96     def callback(d):  function
101     handler = ctx.attach_diagnostic_handler(callback)
113     def callback(d):  function
122     handler = ctx.attach_diagnostic_handler(callback)
136     def callback(d):  function
139     handler = ctx.attach_diagnostic_handler(callback)
151     def callback(d):  function
155     handler = ctx.attach_diagnostic_handler(callback)