docs: public static Geometry clip(Geometry geometry, Envelope envelope,
  			SpatialReference spatialReference) {
  		OperatorClip op = (OperatorClip) factory
  				.getOperator(Operator.Type.Clip);
  		Geometry result = op.execute(geometry, Envelope2D.construct(
  				envelope.getXMin(), envelope.getYMin(), envelope.getXMax(),
  				envelope.getYMax()), spatialReference, null);
  		return result;
  	}