public Builder clearComputeEngineTargetDetails() {
      if (computeEngineTargetDetailsBuilder_ == null) {
        if (targetVmDetailsCase_ == 20) {
          targetVmDetailsCase_ = 0;
          targetVmDetails_ = null;
          onChanged();
        }
      } else {
        if (targetVmDetailsCase_ == 20) {
          targetVmDetailsCase_ = 0;
          targetVmDetails_ = null;
        }
        computeEngineTargetDetailsBuilder_.clear();
      }
      return this;
    }
<pre>
Output only. Details of the target VM in Compute Engine.
</pre>

<code>
.google.cloud.vmmigration.v1.ComputeEngineTargetDetails compute_engine_target_details = 20 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CloneJob.java