def METHOD_NAME(self, state_dict, prefix, local_metadata, strict,
                          missing_keys, unexpected_keys, error_msgs):
    """Overload in order to load mmdet pretrained ckpt."""
    for key in list(state_dict):
        if key.startswith('panoptic_head'):
            state_dict[key.replace('panoptic',
                                   'track')] = state_dict.pop(key)
    super().METHOD_NAME(state_dict, prefix, local_metadata,
                                  strict, missing_keys, unexpected_keys,
                                  error_msgs)