code: public boolean isSimpleAsFeature(Geometry geom,
  			SpatialReference spatialRef, ProgressTracker progressTracker) {
  		return isSimpleAsFeature(geom, spatialRef, false, null, progressTracker);
  	}
docs: Tests if the Geometry is simple (second call will use a cached IsKnownSimple flag and immediately return).
  @param geom The Geometry to be tested.
  @param spatialRef Spatial reference from which the tolerance is obtained. Can be null, then a
  very small tolerance value is derived from the geometry bounds.
  @param progressTracker Allows cancellation of a long operation. Can be null.