code: public java.util.List<ProcessorFeature> getProcessorFeatures() {
          if (processorFeatures == null) {
              processorFeatures = new com.amazonaws.internal.SdkInternalList<ProcessorFeature>();
          }
          return processorFeatures;
      }
docs: <p>
  The number of CPU cores and the number of threads per core for the DB instance class of the DB instance.
  </p>
  
  @return The number of CPU cores and the number of threads per core for the DB instance class of the DB instance.