private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vmmigration.v1.VmwareVmDetails,
            com.google.cloud.vmmigration.v1.VmwareVmDetails.Builder,
            com.google.cloud.vmmigration.v1.VmwareVmDetailsOrBuilder>
        getVmwareVmDetailsFieldBuilder() {
      if (vmwareVmDetailsBuilder_ == null) {
        if (!(vmDetailsCase_ == 1)) {
          vmDetails_ = com.google.cloud.vmmigration.v1.VmwareVmDetails.getDefaultInstance();
        }
        vmwareVmDetailsBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vmmigration.v1.VmwareVmDetails,
                com.google.cloud.vmmigration.v1.VmwareVmDetails.Builder,
                com.google.cloud.vmmigration.v1.VmwareVmDetailsOrBuilder>(
                (com.google.cloud.vmmigration.v1.VmwareVmDetails) vmDetails_,
                getParentForChildren(),
                isClean());
        vmDetails_ = null;
      }
      vmDetailsCase_ = 1;
      onChanged();
      return vmwareVmDetailsBuilder_;
    }
<pre>
The description of the VM in a Source of type Vmware.
</pre>

<code>.google.cloud.vmmigration.v1.VmwareVmDetails vmware_vm_details = 1;</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/VmUtilizationInfo.java