code: public RetryerBuilder<V> retryIfException() {
          rejectionPredicate = Predicates.or(rejectionPredicate, new ExceptionClassPredicate<V>(Exception.class));
          return this;
      }
docs: Configures the retryer to retry if an exception (i.e. any <code>Exception</code> or subclass
  of <code>Exception</code>) is thrown by the call.
  
  @return <code>this</code>