where is the efficientnet pretrained model [Usage]

[StephanPan]

Please use this template to submit your problem or your question will NOT be properly tackled.

---

Describe what you want to do, including:
i want to use efficientnet as the backbone of the yolof

❓ What does an API do and how to use it?

Are the efficientnet pretrained models provided and how can i get it?

[FateScript]

We will update model zoo in one mouth, thanks for your attention.

[4-0-4-notfound]

Same question here：
when using：
playground/detection/coco/efficientdet/effdet1.effnet1.bifpn.coco.640size.300e.syncbn
got error：
AssertionError: Checkpoint cvpods/ImageNetPretrained/GOOGLE/EfficientNet/efficientnet-b1.pth not found!