Missing AttributesImpl or AttributesListImpl or VecAttrListImpl copy constructor

   In VecAttributesImpl.hpp (and same for VecAttrListImpl):

   //  Unimplemented constructors and operators
    // -----------------------------------------------------------------------
    VecAttributesImpl(const VecAttributesImpl&);
    VecAttributesImpl& operator=(const VecAttributesImpl&);

We can read of the storied AttributesImpl in Attributes.hpp, it says:

   "The instance provided will return valid results only during the scope of the startElement invocation (to save it for future use, the application must make a copy: the AttributesImpl helper class provides a convenient constructor for doing so)."

And notes elsewhere say AttributesListImpl is deprecated, use (non existent) AttributesImpl instead.

Dom has cloneNode. I could go looking for an older version of xerces that contains AttributesListImpl? Or write some hack for now. Am I missing something obvious?