public Builder mergeInstantiatingMigratedVm(
        com.google.cloud.vmmigration.v1.InstantiatingMigratedVMStep value) {
      if (instantiatingMigratedVmBuilder_ == null) {
        if (stepCase_ == 5
            && step_
                != com.google.cloud.vmmigration.v1.InstantiatingMigratedVMStep
                    .getDefaultInstance()) {
          step_ =
              com.google.cloud.vmmigration.v1.InstantiatingMigratedVMStep.newBuilder(
                      (com.google.cloud.vmmigration.v1.InstantiatingMigratedVMStep) step_)
                  .mergeFrom(value)
                  .buildPartial();
        } else {
          step_ = value;
        }
        onChanged();
      } else {
        if (stepCase_ == 5) {
          instantiatingMigratedVmBuilder_.mergeFrom(value);
        } else {
          instantiatingMigratedVmBuilder_.setMessage(value);
        }
      }
      stepCase_ = 5;
      return this;
    }
<pre>
Instantiating migrated VM step.
</pre>

<code>.google.cloud.vmmigration.v1.InstantiatingMigratedVMStep instantiating_migrated_vm = 5;
</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CloneStep.java