|UnionShapes(DotSpatial.Data.IFeatureSet self, DotSpatial.Data.ShapeRelateType style)
|This method will create a new IFeatureSet with the the shapes that intersect merged into single shapes, or else it will return a new featureset where EVERY shape is unioned into a single, multi-part shape.
||The source of features to union
||This controls whether intersecting or all features are unioned
An IFeatureSet with the unioned shapes.