why need repeated "weights" in dictionary?

[William_LZL]

Vox-Fusion/src/variations/render_helpers.py

Line 315 in 282768d

 "weights": weights, 

 return {
        "weights": weights,
        "color": rgb,
        "depth": depth,
        "z_vals": z_vals,
        "sdf": sdf,
        "weights": weights,
        "ray_mask": ray_mask,
        "raw": z_min if return_raw else None
    }