/**
  * Clear all cached classname specs. It's necessary to clear all cached subclassed names
  * for any classes if a new class manifest is generated.
  */
 public static function clear_classname_spec_cache()
 {
     self::$classname_spec_cache = array();
     PolymorphicForeignKey::clear_classname_spec_cache();
 }
 /**
  * Clear all cached classname specs. It's necessary to clear all cached subclassed names
  * for any classes if a new class manifest is generated.
  */
 public static function clear_classname_spec_cache()
 {
     self::$classname_spec_cache = array();
 }