.set_module_name_regex("foo.bar.", qconfig2)
             .set_module_name_regex("foo.*", qconfig3)
  In this example, "foo.bar.conv0" would match qconfig1,
  "foo.bar.linear" would match qconfig2, and "foo.baz.relu" would
  match qconfig3.

  If the QConfig for an existing module name regex was already
  set, the new QConfig will override the old one while preserving
  the order in which the regexes were originally registered.

  Return type:
     *QConfigMapping*

set_object_type(object_type, qconfig)
  Set the QConfig for a given module type, function, or method
  name. If the QConfig for an existing object type was already
  set, the new QConfig will override the old one.

  Return type:
     *QConfigMapping*

to_dict()
  Convert this "QConfigMapping" to a dictionary with the following
  keys:

     "" (for global QConfig)

     "object_type"

     "module_name_regex"

     "module_name"
