public static Geometry differenceBA(Geometry a, Geometry b) {
   return EnhancedPrecisionOp.difference(b, a);
 }
 public static Geometry union(Geometry a, Geometry b) {
   return EnhancedPrecisionOp.union(a, b);
 }
 public static Geometry symDifference(Geometry a, Geometry b) {
   return EnhancedPrecisionOp.symDifference(a, b);
 }
 public static Geometry intersection(Geometry a, Geometry b) {
   return EnhancedPrecisionOp.intersection(a, b);
 }