private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vmmigration.v1.UtilizationReport,
            com.google.cloud.vmmigration.v1.UtilizationReport.Builder,
            com.google.cloud.vmmigration.v1.UtilizationReportOrBuilder>
        getUtilizationReportFieldBuilder() {
      if (utilizationReportBuilder_ == null) {
        utilizationReportBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vmmigration.v1.UtilizationReport,
                com.google.cloud.vmmigration.v1.UtilizationReport.Builder,
                com.google.cloud.vmmigration.v1.UtilizationReportOrBuilder>(
                getUtilizationReport(), getParentForChildren(), isClean());
        utilizationReport_ = null;
      }
      return utilizationReportBuilder_;
    }
<pre>
Required. The report to create.
</pre>

<code>
.google.cloud.vmmigration.v1.UtilizationReport utilization_report = 2 [(.google.api.field_behavior) = REQUIRED];
</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CreateUtilizationReportRequest.java