message: Fix indices for PolyfaceAuxData parsing (need to switch to zero based).
diff: @@ -719,7 +719,11 @@ export namespace IModelJson {
  outChannels.push(new AuxChannel(outChannelData, inChannel.dataType as AuxChannelDataType, inChannel.name, inChannel.inputName));
  }
  }
  - return new PolyfaceAuxData(outChannels, data.indices);
  +
  + const auxData = new PolyfaceAuxData(outChannels, []);
  + Reader.addZeroBasedIndicesFromSignedOneBased(data.indices, (x: number) => { auxData.indices.push(x); });
  +
  + return auxData;
  }
  public static parseIndexedMesh(data?: any): any | undefined {
  