A DESCRIPTION OF THE PROBLEM :
In the description for the Marshal Event Callbacks, one of the method signatures contains a spurious lower-case 'm':

void afterMmarshal(Marshaller);

It should be:

void afterMarshal(Marshaller);

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
void afterMarshal(Marshaller);
ACTUAL -
void afterMmarshal(Marshaller);

URL OF FAULTY DOCUMENTATION :
http://docs.oracle.com/javase/7/docs/api/javax/xml/bind/Marshaller.html