class Histogram implements Metric, Sampling, Counting {

    private final Reservoir reservoir;
    private final LongAdder count;

    /**
     * Creates a new {@link Histogram} with the given reservoir.
     *
     * @param reservoir the reservoir to create a histogram from
     */
    public Histogram(Reservoir reservoir) {
        this.reservoir = reservoir;
        this.count = new LongAdder();
    }

    /**
     * Adds a recorded value.
     *
     * @param value the length of the value
     */
    public void update(int value) {
        update((long) value);
    }

    /**
     * Adds a recorded value.
     *
     * @param value the length of the value
     */
    public void update(long value) {
        count.increment();
        reservoir.update(value);
    }

    /**
     * Returns the number of values recorded.
     *
     * @return the number of values recorded
     */
    @Override
    public long getCount() {
        return count.sum();
    }

    @Override
    public Snapshot getSnapshot() {
        return reservoir.getSnapshot();
    }

    @Override
    public String toString() {<FILL_FUNCTION_BODY>}
}

        final ByteArrayOutputStream out = new ByteArrayOutputStream();
        this.getSnapshot().dump(out);
        try {
            return out.toString(StandardCharsets.UTF_8.name());
        } catch (UnsupportedEncodingException e) {
            return super.toString();
        }
    
<no_super_class>