private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vmmigration.v1.ReplicationCycle,
            com.google.cloud.vmmigration.v1.ReplicationCycle.Builder,
            com.google.cloud.vmmigration.v1.ReplicationCycleOrBuilder>
        getCurrentSyncInfoFieldBuilder() {
      if (currentSyncInfoBuilder_ == null) {
        currentSyncInfoBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vmmigration.v1.ReplicationCycle,
                com.google.cloud.vmmigration.v1.ReplicationCycle.Builder,
                com.google.cloud.vmmigration.v1.ReplicationCycleOrBuilder>(
                getCurrentSyncInfo(), getParentForChildren(), isClean());
        currentSyncInfo_ = null;
      }
      return currentSyncInfoBuilder_;
    }
<pre>
Output only. The percentage progress of the current running replication
cycle.
</pre>

<code>
.google.cloud.vmmigration.v1.ReplicationCycle current_sync_info = 13 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/MigratingVm.java