(self)
Returns the chunk backward from this chunk in the list of free chunks.
Returns the chunk backward from this chunk in the list of free chunks.
Returns the chunk backward from this chunk in the list of free chunks .
def bck_chunk(self):
        """
        Returns the chunk backward from this chunk in the list of free chunks.
        """
        raise NotImplementedError("%s not implemented for %s" % (self.bck_chunk.__func__.__name__,
                                                                 self.__class__.__name__))
def bck_chunk ( self ) : raise NotImplementedError ( "%s not implemented for %s" % ( self . bck_chunk . __func__ . __name__ , self . __class__ . __name__ ) )