Use profile mechanism, not no-op mutation (#2442)
Use profile mechanism, not no-op mutation (#2442)


jhamman/xarray,markelg/xray,shoyer/xarray,markelg/xray,shoyer/xarray,markelg/xray,jhamman/xarray,chunweiyuan/xarray,jhamman/xray,pydata/xarray,shoyer/xray,pydata/xarray,pydata/xarray,jhamman/xarray,xray/xray