code: def get_properties(self, feature):
          
          if not isinstance(feature, b2.build.feature.Feature):
              feature = b2.build.feature.get(feature)
          assert isinstance(feature, b2.build.feature.Feature)
  
          result = []
          for p in self.all_:
              if p.feature == feature:
                  result.append(p)
          return result
docs: Returns all contained properties associated with 'feature