code: public GeometryIndex addChildren(GeometryIndex index, GeometryIndexType type, int... values) {
  		return fromDelegate(delegate.addChildren(toDelegate(index), toDelegate(type), values));
  	}
docs: Given a certain geometry index, add more levels to it (This method will not change the underlying geometry !).
  
  @param index The index to start out from.
  @param type Add more levels to it, where the deepest level should be of this type.
  @param values A list of integer values that determine the indices on each level in the index.
  @return The recursive geometry index resulting from adding the given parameters to the given parent index.