src/java.base/share/classes/java/time/zone/ZoneOffsetTransition.java

*** 385,397 ****
       *
       * @return the list of valid offsets
       */
      List<ZoneOffset> getValidOffsets() {
          if (isGap()) {
!             return Collections.emptyList();
          }
!         return Arrays.asList(getOffsetBefore(), getOffsetAfter());
      }
  
      //-----------------------------------------------------------------------
      /**
       * Compares this transition to another based on the transition instant.
--- 385,397 ----
       *
       * @return the list of valid offsets
       */
      List<ZoneOffset> getValidOffsets() {
          if (isGap()) {
!             return List.of();
          }
!         return List.of(getOffsetBefore(), getOffsetAfter());
      }
  
      //-----------------------------------------------------------------------
      /**
       * Compares this transition to another based on the transition instant.