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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 _closure_deletelink(self, oldparentpk):
 """Remove incorrect links from the closure tree."""

        self._closure_model.objects.filter(
            **{
                "parent__%s__child" % self._closure_parentref(): oldparentpk,
                "child__%s__parent" % self._closure_childref(): self.pk
            }
        ).delete()