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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def used_by_slides(self):
 """Tuple of slide objects based on this slide layout."""

        # ---getting Slides collection requires going around the horn a bit---
        slides = self.part.package.presentation_part.presentation.slides
        return tuple(s for s in slides if s.slide_layout == self)