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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 intersect(self, range_):
 self.solver.intersection_broad_tests_count += 1 """Remove variants whose version fall outside of the given range."""

        if range_.is_any():
            return self

        if self.solver.optimised:
            if range_ in self.been_intersected_with:
                return self

        if self.pr:
            self.pr.passive("intersecting %s wrt range '%s'...", self, range_)

        self.solver.intersection_tests_count += 1

        with self.solver.timed(self.solver.intersection_time):
            # this is faster than iter_intersecting :(
            entries = [x for x in self.entries if x.version in range_]

        if not entries:
            return None
        elif len(entries) < len(self.entries):
            copy_ = self._copy(entries)
            copy_.been_intersected_with.add(range_)
            return copy_
        else:
            self.been_intersected_with.add(range_)
            return self