question: public static boolean isPrimitiveWrapperArray ( Class < ? > clazz ) { Assert . notNull ( clazz , "Class must not be null" ) ; return ( clazz . isArray ( ) && isPrimitiveWrapper ( clazz . getComponentType ( ) ) ) ; }
target:  Check if the given class represents an array of primitive wrappers, i.e. Boolean, Byte, Character, Short, Integer, Long, Float, or Double.