cosmetic (adds commented list of SIAv2 params to Coord class)

   Band band;

   Time time;

   Pol  pol;

/* TBD: SIAv2

   Interval fov;

   Interval spatres;

   Interval specrp;

   Interval exptime;

   Interval timeres;

   String id;

   String collection;

   String facility;

   String instrument;

   String dptype; // dataproduct_type "image" | "cube"

   Integer calib; // 0,1,..,5

   String target;

   Stirng format; // access_format MIME or DataLink MIME

   Integer maxrec; // implement oveflow and special case maxrec=0

*/

}