cdm/src/main/java/ucar/nc2/dt/grid/GridDataset.java
public List<ucar.nc2.dt.GridDataset.Gridset> getGridsets() {
    return new ArrayList<ucar.nc2.dt.GridDataset.Gridset>(gridsetHash.values());
  }
public List<ucar.nc2.dt.GridDataset.Gridset> getGridsets() {
    return new ArrayList<ucar.nc2.dt.GridDataset.Gridset>(gridsetHash.values());
  }
Return GridDatatype objects grouped by GridCoordSys. All GridDatatype in a Gridset
have the same GridCoordSystem.

@return List of type ucar.nc2.dt.GridDataset.Gridset