def forward(self, feats: Tuple[Tensor]) -> Tensor:
        """Forward the network. The input is multi scale feature maps and the
        output is the coordinates.

        Args:
            feats (Tuple[Tensor]): Multi scale feature maps.

        Returns:
            Tensor: Output coordinates (and sigmas[optional]).
        """
        x = feats[-1]

        x = self.conv(x)

        return x.reshape(-1, self.num_joints, 3)
Forward the network. The input is multi scale feature maps and the
        output is the coordinates.

        Args:
            feats (Tuple[Tensor]): Multi scale feature maps.

        Returns:
            Tensor: Output coordinates (and sigmas[optional]).
        
mmpose/mmpose/models/heads/regression_heads/temporal_regression_head.py