public com.google.protobuf.TimestampOrBuilder getStartTimeOrBuilder() {
      if (startTimeBuilder_ != null) {
        return startTimeBuilder_.getMessageOrBuilder();
      } else {
        return startTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : startTime_;
      }
    }
<pre>
The time the step has started.
</pre>

<code>.google.protobuf.Timestamp start_time = 1;</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CutoverStep.java