private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vmmigration.v1.SchedulePolicy,
            com.google.cloud.vmmigration.v1.SchedulePolicy.Builder,
            com.google.cloud.vmmigration.v1.SchedulePolicyOrBuilder>
        getPolicyFieldBuilder() {
      if (policyBuilder_ == null) {
        policyBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vmmigration.v1.SchedulePolicy,
                com.google.cloud.vmmigration.v1.SchedulePolicy.Builder,
                com.google.cloud.vmmigration.v1.SchedulePolicyOrBuilder>(
                getPolicy(), getParentForChildren(), isClean());
        policy_ = null;
      }
      return policyBuilder_;
    }
<pre>
The replication schedule policy.
</pre>

<code>.google.cloud.vmmigration.v1.SchedulePolicy policy = 8;</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/MigratingVm.java