public ContainingViewportBuilder add(final ICoordinate... points) {
            if (points != null) {
                for (ICoordinate p : points) {
                    add(p);
                }
            }
            return this;
        }
Helper class to build Viewports without instanciating too many helper objects
main/src/main/java/cgeo/geocaching/location/Viewport.java