buckets. Bucket <code>i</code> has the following
boundaries:</p><ul><li>Upper bound (<code>0 &lt;= i &lt; N-1</code>): <code>bounds[i]</code></li><li>Lower bound (<code>1 &lt;= i &lt; N</code>): <code>bounds[i - 1]</code></li></ul><p>The <code>bounds</code> field must contain at least one element. If <code>bounds</code> has
only one element, then there are no finite buckets, and that single
element is the common boundary of the overflow and underflow buckets.</p><table class=message-fields><thead><tr><th>Fi