§ IR-eiãó—dZddlTdS)a Built-in mask mixin class. The design uses `Masked` as a factory class which automatically generates new subclasses for any data class that is itself a subclass of a predefined masked class, with `MaskedNDArray` providing such a predefined class for `~numpy.ndarray`. é)Ú*N)Ú__doc__Úcore©óú=lib/python3.11/site-packages/astropy/utils/masked/__init__.pyúr s#ððððÐÐÐÐÐr