@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      version_ = "";
      state_ = 0;
      error_ = null;
      if (errorBuilder_ != null) {
        errorBuilder_.dispose();
        errorBuilder_ = null;
      }
      startTime_ = null;
      if (startTimeBuilder_ != null) {
        startTimeBuilder_.dispose();
        startTimeBuilder_ = null;
      }
      previousVersion_ = "";
      return this;
    }
<pre>
UpgradeStatus contains information about upgradeAppliance operation.
</pre>

Protobuf type {@code google.cloud.vmmigration.v1.UpgradeStatus}
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/UpgradeStatus.java