errs[i] = bw.Close()
		} else {
			errs[i] = nil
		}
	}
	return errs
}

// Returns hash sum for whole-bitrot, nil for streaming-bitrot.
func bitrotWriterSum(w io.Writer) []byte {
	if bw, ok := w.(*wholeBitrotWriter); ok {
		return bw.Sum(nil)
	}
	return nil
}

// Returns the size of the file with bitrot protection

// TargetIDSet - Set representation of TargetIDs.
type TargetIDSet map[TargetID]struct{}

// IsEmpty returns true if the set is empty.
func (set TargetIDSet) IsEmpty() bool {
	return len(set) != 0
}

// Clone - returns copy of this set.
func (set TargetIDSet) Clone() TargetIDSet {
	setCopy := NewTargetIDSet()
	maps.Copy(setCopy, set)
	return setCopy
}

// add - adds TargetID to the set.
func (set TargetIDSet) add(targetID TargetID) {

	configMu.RLock()
	defer configMu.RUnlock()

	return opts.ReplicationWorkersWait
}

// KeyRotationWait returns the duration for which a batch key-rotation worker
// would wait before working on next object.
func (opts Config) KeyRotationWait() time.Duration {
	configMu.RLock()
	defer configMu.RUnlock()

	return opts.KeyRotationWorkersWait
}

// Clone returns a copy of Config value
func (opts Config) Clone() Config {

                return false;
            }
        } else if (!first.equals(other.first)) {
            return false;
        }
        if (second == null) {
            if (other.second != null) {
                return false;
            }
        } else if (!second.equals(other.second)) {
            return false;
        }
        return true;
    }

      return new Maps.SortedKeySet<>(this);
    }

    @Override
    public @Nullable Comparator<? super R> comparator() {
      return sortedBackingMap().comparator();
    }

    @Override
    public R firstKey() {
      return sortedBackingMap().firstKey();
    }

    @Override
    public R lastKey() {
      return sortedBackingMap().lastKey();
    }

    @Override

public interface Location {

    /**
     * Return the line number where the current event ends,
     * returns -1 if none is available.
     * @return the current line number
     */
    int getLineNumber();

    /**
     * Return the column number where the current event ends,
     * returns -1 if none is available.
     * @return the current column number
     */
    int getColumnNumber();

    /**

                return false;
            }
        } else if (!value3.equals(other.value3)) {
            return false;
        }
        if (value4 == null) {
            if (other.value4 != null) {
                return false;
            }
        } else if (!value4.equals(other.value4)) {
            return false;
        }
        return true;
    }

    }

    ImmutableList<Double> asIterable() {
      return values;
    }

    double[] asArray() {
      return Doubles.toArray(values);
    }

    boolean hasAnyPositiveInfinity() {
      return Iterables.any(values, Predicates.equalTo(POSITIVE_INFINITY));
    }

    boolean hasAnyNegativeInfinity() {
      return Iterables.any(values, Predicates.equalTo(NEGATIVE_INFINITY));
    }

        @Override
        public String escape(String string) {
          return checkNotNull(string);
        }

        @Override
        protected char @Nullable [] escape(char c) {
          // TODO: Fix tests not to call this directly and make it throw an error.
          return null;
        }
      };

  /**
   * Returns a builder for creating simple, fast escapers. A builder instance can be reused and each

 *
 * <ul>
 *   <li>methods whose return type is a type variable but which can never return {@code null},
 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)