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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 NewPredicateSection(self, pred_str, test_attr=False):
 """For chains of predicate clauses."""

        pred = self._GetPredicate(pred_str, test_attr=test_attr)
        block = _PredicateSection()
        block.NewOrClause(pred)
        
        self._NewSection(_DoPredicates, block)