code: package de.tu_darmstadt.stg.mudetect.overlapsfinder;
  
  import de.tu_darmstadt.stg.mudetect.OverlapsFinder;
  import de.tu_darmstadt.stg.mudetect.aug.model.APIUsageExample;
  import de.tu_darmstadt.stg.mudetect.aug.model.patterns.APIUsagePattern;
  import de.tu_darmstadt.stg.mudetect.model.Overlap;
  
  import java.util.Collections;
  import java.util.List;
  
  public class EmptyOverlapsFinder implements OverlapsFinder {
      private OverlapsFinder finder;
  
      public EmptyOverlapsFinder(OverlapsFinder finder) {
          this.finder = finder;
      }
  
      @Override
      public List<Overlap> findOverlaps(APIUsageExample target, APIUsagePattern pattern) {
          List<Overlap> overlaps = finder.findOverlaps(target, pattern);
          if (overlaps.isEmpty()) {
              return Collections.singletonList(
                      new Overlap(pattern, target, Collections.emptyMap(), Collections.emptyMap()));
          } else {
              return overlaps;
          }
      }
  }
  