Lambda-like class with lots of casting

IsYearChanged.cls

private class IsYearChanged extends nebc.TriggerContextBooleanFunction {

    public override Boolean isTrueFor(SObject oldRecord, SObject newRecord) {
        Term__c oldTerm = (Term__c)oldRecord;
        Term__c newTerm = (Term__c)newRecord;
        return Math.abs(oldTerm.Start_Date__c.year() - newTerm.Start_Date__c.year()) > 0;
    }
}