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Deprecatorz�Decorator class for adding deprecated functions.
Warnings are switched on by default.
To disable deprecation warnings, use:
>>> from pyfakefs.deprecator import Deprecator
>>>
>>> Deprecator.show_warnings = False
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zDeprecator.__call__c s( t � j|�� fdd��}t| ||� dS )ab Add the deprecated version of a member function to the given class.
Gives a deprecation warning on usage.
Args:
clss: the class where the deprecated function is to be added
func: the actual function that is called by the deprecated version
deprecated_name: the deprecated name of the function
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