code: public com.google.appengine.v1.ManualScaling getManualScaling() {
      if (scalingCase_ == 5) {
         return (com.google.appengine.v1.ManualScaling) scaling_;
      }
      return com.google.appengine.v1.ManualScaling.getDefaultInstance();
    }
docs: <pre>
  A service with manual scaling runs continuously, allowing you to perform
  complex initialization and rely on the state of its memory over time.
  </pre>
  
  <code>.google.appengine.v1.ManualScaling manual_scaling = 5;</code>