question: public static boolean isCastableToArray ( Object o ) { if ( isArray ( o ) ) return true ; else if ( o instanceof Struct ) { Struct sct = ( Struct ) o ; Iterator < Key > it = sct . keyIterator ( ) ; while ( it . hasNext ( ) ) { if ( ! isInteger ( it . next ( ) , false ) ) return false ; } return true ; } return false ; }
target:  can this type be casted to a array