private void endRegionTimeToLive() {
    ExpirationAttributes expire = (ExpirationAttributes) stack.pop();
    RegionAttributesCreation attrs = peekRegionAttributesContext("region-time-to-live");
    attrs.setRegionTimeToLive(expire);
  }
When a <code>region-time-to-live</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