/**
  * Get as integer value
  *
  * @param string $key             key string for hash map
  * @param int $default_value   default value
  *
  * @return Charcoal_Integer
  */
 public function getInteger($key, $default_value = NULL)
 {
     //        Charcoal_ParamTrait::validateString( 1, $key );
     //        Charcoal_ParamTrait::validateInteger( 2, $default_value, TRUE );
     $key = us($key);
     return parent::getInteger($key, $default_value);
 }