public LoopLineMerger setSegmentTransform(GeometryPipeline pipeline) {
    this.pipeline = pipeline;
    return this;
  }
Sets a function that should be applied to each segment between intersections instead of simplification.
<p>
When this is present, {@code tolerance} is ignored.
planetiler-core/src/main/java/com/onthegomap/planetiler/util/LoopLineMerger.java