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Replace Deprecated `abc` Decorators


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The @abstractproperty, @abstractclassmethod, and @abstractstaticmethod decorators from abc has been deprecated since Python 3.3. This is because it's possible to use @property, @classmethod, and @staticmethod in combination with @abstractmethod.

Our changes look like the following:

 import abc

class Foo:
- @abc.abstractproperty
+ @property
+ @abc.abstractmethod
def bar():

and similarly for @abstractclassmethod and @abstractstaticmethod.

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Why is this codemod marked as Merge Without Review?

This change fixes deprecated uses and is safe.

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