Returns whether this job belongs to the given family. Job families are represented as objects that are not interpreted or specified in any way by the job manager. Thus, a job can choose to belong to any number of families.
Clients may override this method. This default implementation always returns false. Overriding implementations must return false for families they do not recognize.
@param family the job family identifier
@return
true if this job belongs to the given family, and
false otherwise.