public RegionFactory<K, V> setEntryIdleTimeout(ExpirationAttributes idleTimeout) {
    attrsFactory.setEntryIdleTimeout(idleTimeout);
    return this;
  }
Sets the idleTimeout expiration attributes for region entries for the next
{@code RegionAttributes} created. Note that the XML element that corresponds to this method
"entry-idle-time", does not include "out" in its name.

@param idleTimeout the idleTimeout ExpirationAttributes for entries in this region
@return a reference to this RegionFactory object
@throws IllegalArgumentException if idleTimeout is null
@see AttributesFactory#setEntryIdleTimeout
geode-core/src/main/java/org/apache/geode/cache/RegionFactory.java