code: def _GetPathSegmentIndexForSimilarityWeights(
        self, similarity_weights, occurrence_weights, value_weights):
      
      largest_weight = similarity_weights.GetLargestWeight()
  
      if largest_weight > 0:
        similarity_weight_indexes = similarity_weights.GetIndexesForWeight(
            largest_weight)
        number_of_similarity_indexes = len(similarity_weight_indexes)
      else:
        number_of_similarity_indexes = 0
  
      path_segment_index = None
      if number_of_similarity_indexes == 0:
        path_segment_index = self._GetPathSegmentIndexForOccurrenceWeights(
            occurrence_weights, value_weights)
  
      elif number_of_similarity_indexes == 1:
        path_segment_index = similarity_weight_indexes[0]
  
      else:
        largest_weight = 0
        largest_value_weight = 0
  
        for similarity_index in similarity_weight_indexes:
          occurrence_weight = occurrence_weights.GetWeightForIndex(
              similarity_index)
  
          if largest_weight > 0 and largest_weight == occurrence_weight:
            value_weight = value_weights.GetWeightForIndex(similarity_index)
  
            if largest_value_weight < value_weight:
              largest_weight = 0
  
          if not path_segment_index or largest_weight < occurrence_weight:
            largest_weight = occurrence_weight
            path_segment_index = similarity_index
  
            largest_value_weight = value_weights.GetWeightForIndex(
                similarity_index)
  
      return path_segment_index
docs: Retrieves the index of the path segment based on similarity weights.
  
      Args:
        similarity_weights: the similarity weights object (instance of
                            _PathSegmentWeights).
        occurrence_weights: the occurrence weights object (instance of
                            _PathSegmentWeights).
        value_weights: the value weights object (instance of _PathSegmentWeights).
  
      Returns:
        An integer containing the path segment index.