old_contents: from mapbox_vector_tile.encoder import on_invalid_geometry_make_valid
  from mapbox_vector_tile import encode as mvt_encode
  
  
  def encode(fp, feature_layers, coord, bounds_merc):
      tile = mvt_encode(feature_layers, quantize_bounds=bounds_merc,
                        on_invalid_geometry=on_invalid_geometry_make_valid)
      fp.write(tile)
  
new_contents: from mapbox_vector_tile.encoder import on_invalid_geometry_make_valid
  from mapbox_vector_tile import encode as mvt_encode
  
  
  def encode(fp, feature_layers, coord, bounds_merc):
      tile = mvt_encode(
          feature_layers,
          quantize_bounds=bounds_merc,
          on_invalid_geometry=on_invalid_geometry_make_valid,
          round_fn=round,
      )
      fp.write(tile)
  
subject: Use round_fn to specify built-in round function