public Builder setComputeEngineTargetDefaults(
        com.google.cloud.vmmigration.v1.ComputeEngineTargetDefaults value) {
      if (computeEngineTargetDefaultsBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        targetVmDefaults_ = value;
        onChanged();
      } else {
        computeEngineTargetDefaultsBuilder_.setMessage(value);
      }
      targetVmDefaultsCase_ = 26;
      return this;
    }
<pre>
Details of the target VM in Compute Engine.
</pre>

<code>
.google.cloud.vmmigration.v1.ComputeEngineTargetDefaults compute_engine_target_defaults = 26;
</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/MigratingVm.java