How to get runner state in the detector class?

[LuckyDC]

Thanks for your great framework! I encounter a case where I have to change the contribution of a branch to the final output according to the training process. But I do not know how to access runner.epoch in the forward_train function of the detector or head class. Would you like to provide a solution? Thanks

[ZwwWayne]

For now, you may need to customize a runner following this PR open-mmlab/mmcv#1115.
We are still working on it to provide safe and stable usage. This feature will be officially supported in the future.