A read-and-write property identifying this object, in case the Type property is equal to 3 - nitOpaque. The value of this property is an array of bytes, that is, a String of characters not necessarily valid or printable. If the Type property is different from 3 (three), reading this property returns an error. Writing to this property always forces the Type property to change to 3 (three). An empty String in this property identifies this object as Null.