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�ZdS(sjClass advice.

This module was adapted from 'protocols.advice', part of the Python
Enterprise Application Kit (PEAK).  Please notify the PEAK authors
([email protected] and [email protected]) if bugs are found or
Zope-specific changes are required, so that the PEAK version of this module
can be kept in sync.

PEAK is a Python application framework that interoperates with (but does
not require) Zope 3 and Twisted.  It provides tools for manipulating UML
models, object-relational persistence, aspect-oriented programming, and more.
Visit the PEAK home page at http://peak.telecommunity.com for more information.
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		ics�trtd��ntj|�}t|�\}}}}|jd��trf|jdt��n|jdt�����fd�}�|_�|_	||d<dS(s2Set up 'callback' to be passed the containing class upon creation

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    callback will be given one argument: the newly created containing class.
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    class.

    The optional 'depth' argument to this function determines the number of
    frames between this function and the targeted class suite.  'depth'
    defaults to 2, since this skips this function's frame and one calling
    function frame.  If you use this function from a function called directly
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    to determine the correct depth yourself.

    This function works by installing a special class factory function in
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