precision of the number value as well as return a result with
 the opposite sign. This method should only be called when the parser
 state is <a href="JsonParser.Event.html#VALUE_NUMBER"><code>JsonParser.Event.VALUE_NUMBER</code></a>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an integer for a JSON number</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalStateException.html?is-external=true" title="clas