these are convenient to convert everything required to rip out the old
parser of sim_fibo_ad. the concrete keywords are:
- COMPDAT
- EQUIL
- GCONINJE
- GCONPROD
- GRUPTREE
- WCONINJE
- WCONINJ
- WCONPROD
- WELOPEN
- WELSPECS
- WGRUPCON
in the medium term it would be nice if these wrapper classes could be
automatically generated from the JSON keyword descriptions.
