Register an ExtensionType with pandas as class decorator.
This enables operations like .astype(name) for the name of the ExtensionDtype.
A class decorator.
Examples
>>> from pandas.api.extensions import register_extension_dtype, ExtensionDtype
>>> @register_extension_dtype
... class MyExtensionDtype(ExtensionDtype):
... name = "myextension"
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https://pandas.pydata.org/pandas-docs/version/2.3.0/reference/api/pandas.api.extensions.register_extension_dtype.html