Convert a bound type to a value type.

  Convert a bound type to a value type.
Parameters:
- v - The value to be convereted. Can be null.
Throws:
- Exception - if there's an error during the conversion. The caller is responsible for reporting the error to the user through {@link javax.xml.bind.ValidationEventHandler}.

  Convert a value type to a bound type.

  Convert a value type to a bound type.
Parameters:
- v - The value to be converted. Can be null.
Throws:
- Exception - if there's an error during the conversion. The caller is responsible for reporting the error to the user through {@link javax.xml.bind.ValidationEventHandler}.