private void endRegionIdleTime() {
    ExpirationAttributes expire = (ExpirationAttributes) stack.pop();
    RegionAttributesCreation attrs = peekRegionAttributesContext("region-idle-time");
    attrs.setRegionIdleTimeout(expire);
  }
When a <code>region-idle-time</code> element is finished, the {@link ExpirationAttributes} are
on top of the stack followed by the {@link RegionAttributesCreation} to which the expiration
attributes are assigned.
geode-core/src/main/java/org/apache/geode/internal/cache/xmlcache/CacheXmlParser.java