Addressing review comments (#3690)
- https://github.com/microsoft/onnxruntime/pull/3681#discussion_r414359326
- https://github.com/microsoft/onnxruntime/pull/3681#discussion_r414359463
- https://github.com/microsoft/onnxruntime/pull/3681#discussion_r414360023
- https://github.com/microsoft/onnxruntime/pull/3681#discussion_r414361667
- https://github.com/microsoft/onnxruntime/pull/3681#discussion_r414368707
- https://github.com/microsoft/onnxruntime/pull/3681#discussion_r414371480
- https://github.com/microsoft/onnxruntime/pull/3681#discussion_r414379362
- https://github.com/microsoft/onnxruntime/pull/3681#discussion_r414374516
- https://github.com/microsoft/onnxruntime/pull/3681#discussion_r414801087
