code: public ModifyDBInstanceRequest withProcessorFeatures(ProcessorFeature... processorFeatures) {
          if (this.processorFeatures == null) {
              setProcessorFeatures(new com.amazonaws.internal.SdkInternalList<ProcessorFeature>(processorFeatures.length));
          }
          for (ProcessorFeature ele : processorFeatures) {
              this.processorFeatures.add(ele);
          }
          return this;
      }
docs: <p>
  The number of CPU cores and the number of threads per core for the DB instance class of the DB instance.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setProcessorFeatures(java.util.Collection)} or {@link #withProcessorFeatures(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param processorFeatures
  The number of CPU cores and the number of threads per core for the DB instance class of the DB instance.
  @return Returns a reference to this object so that method calls can be chained together.