Descriptor which get and set methods are implemented through delegates
Inheritance: Descriptor
 public NativeDescriptor(JsDictionaryObject owner, NativeDescriptor src)
     : base(owner, src.Name)
 {
     getter       = src.getter;
     setter       = src.setter;
     Writable     = src.Writable;
     Configurable = src.Configurable;
     Enumerable   = src.Enumerable;
 }
 public NativeDescriptor(JsDictionaryObject owner, NativeDescriptor src)
     : base(owner, src.Name)
 {
     getter = src.getter;
     setter = src.setter;
     Writable = src.Writable;
     Configurable = src.Configurable;
     Enumerable = src.Enumerable;
 }