code: public GeoShapeMapper transform(GeoTransformation... transformations) {
          if (this.transformations == null) {
              this.transformations = Arrays.asList(transformations);
          } else {
              this.transformations.addAll(Arrays.asList(transformations));
          }
          return this;
      }
docs: Sets the transformations to be applied to the shape before indexing it.
  
  @param transformations the sequence of transformations
  @return this with the specified sequence of transformations