code: def _construct_location_to_filter_list(match_query):
      
      # For each location, all filters for that location should be applied at the first instance.
      # This function collects a list of all filters corresponding to each location
      # present in the given MatchQuery.
      location_to_filters = {}
      for match_traversal in match_query.match_traversals:
          for match_step in match_traversal:
              current_filter = match_step.where_block
              if current_filter is not None:
                  current_location = match_step.as_block.location
                  location_to_filters.setdefault(current_location, []).append(
                      current_filter)
  
      return location_to_filters
docs: Return a dict mapping location -> list of filters applied at that location.
  
      Args:
          match_query: MatchQuery object from which to extract location -> filters dict
  
      Returns:
          dict mapping each location in match_query to a list of
              Filter objects applied at that location