[Gdal-dev] Mysterious "geod_datum.csv"

[VTP]

In the file: gdal/frmts/gtiff/gt_wkt_srs.cpp
In the method: OGCDatumName2EPSGDatumCode()

It appears to look for and use a file "geod_datum.csv".

But, this file is not found in gdal/data.

Is it a missing datafile, or perhaps i am looking at old code?

Thanks,
Ben