/**
 * Simple container filter checking whether an item property value is null.
 * 
 * This filter also directly supports in-memory filtering.
 * 
 * @since 6.6
 */
/**
 * Simple container filter checking whether an item property value is null.
 * 
 * This filter also directly supports in-memory filtering.
 * 
 * @since 6.6
 */ | IsNull.java