def forward(self, x: Tuple[Tensor]) -> Tuple[List]:
        """Forward features from the upstream network."""
        offsets_pred, vis_pred = [], []
        for i in range(len(x)):
            pose_feat = self.multi_level_pose_convs[i](x[i])
            offsets_pred.append(self.multi_level_conv_offsets[i](pose_feat))
            vis_pred.append(self.multi_level_conv_vis[i](pose_feat))

        return (*super().forward(x), offsets_pred, vis_pred)
Forward features from the upstream network.
mmpose/projects/yolox_pose/models/yolox_pose_head.py