code: @Deprecated
      @Override
      protected int writeDeltaTo(int jumpTarget) {
          int i=charsLength-jumpTarget;
          assert(i>=0);
          if(i<=CharsTrie.kMaxOneUnitDelta) {
              return write(i);
          }
          int length;
          if(i<=CharsTrie.kMaxTwoUnitDelta) {
              intUnits[0]=(char)(CharsTrie.kMinTwoUnitDeltaLead+(i>>16));
              length=1;
          } else {
              intUnits[0]=(char)(CharsTrie.kThreeUnitDeltaLead);
              intUnits[1]=(char)(i>>16);
              length=2;
          }
          intUnits[length++]=(char)i;
          return write(intUnits, length);
      }
docs: {@inheritDoc}
  @deprecated This API is ICU internal only.
  @hide draft / provisional / internal are hidden on Android