@Override
    public boolean equals(final Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        final Count<?> count = (Count<?>) o;
        return exact == count.exact &&
                Objects.equals(this.count, count.count);
    }
@return Empty if the count is not exact or is null
stroom-util-shared/src/main/java/stroom/util/shared/Count.java