Dmitry Pershin
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                                            Dmitry Pershin
                                        
                                    `nsmap` argument of [Element](https://github.com/lxml/lxml-stubs/blob/master/lxml-stubs/etree.pyi#L467) function is of type `Optional[_NSMapArg]` where `_NSMapArg` is `Mapping[str, str]`. But according to the documentation [here](https://lxml.de/tutorial.html#namespaces) namespace key for the default namespace supposed to be `None`:...