Set<String> immutableCopy;
          try {
            immutableCopy = copyOf(input);
          } catch (RuntimeException e) {
            throw new RuntimeException(
                Strings.lenientFormat(
                    "byAscendingSize %s, startIndex %s, inputIsSet %s",
                    byAscendingSize, startIndex, inputIsSet),
                e);
          }
          /*