Object Detection API training documentation/tutorial from scratch + from retraining for TF2

Prerequisites

Please answer the following question for yourself before submitting an issue.

• I checked to make sure that this feature has not been requested already.

1. The entire URL of the file you are using

https://github.com/tensorflow/models/tree/master/official/...

2. Describe the feature you request

I would like to request two simple examples training Object Detection API from scratch and a second retraining (possibly of a SSD MobileNet model...dataset don't care) --to understand how to use the new API for TF2. Without this it is extremely difficult to understand how to transition from Object Detection API under TF1 to TF2. Tensorflow has nice examples (and codelabs) for doing both for classification. Detection examples are needed and not present even for TF1 officially --for TF2 it is critical.

3. Additional context

4. Are you willing to contribute it? (Yes or No)

Yes but, need at least shell of program to begin