[issue21990] saxutils defines an inner class where a normal one would do

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

LGTM. But it would be better to add underscore prefix to class name.

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nosy: +serhiy.storchaka
stage:  -> commit review

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21990>
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