message: Printing bools in graphviz.
diff: @@ -132,6 +132,12 @@ void AppendArrayVal(string* string, Array const& array, int index) {
  return;
  }
  AppendF(string, "%d", data[index]);
  + } else if (array.buffer->type == ArrayDataType::kBool) {
  + const auto& data = array.GetBuffer<ArrayDataType::kBool>().data;
  + if (index >= data.size()) {
  + return;
  + }
  + AppendF(string, "%d", data[index]);
  }
  }
  