public com.google.type.DateTime getStart() {
      if (startBuilder_ == null) {
        return start_ == null ? com.google.type.DateTime.getDefaultInstance() : start_;
      } else {
        return startBuilder_.getMessage();
      }
    }
<pre>
Start date time.
</pre>

<code>.google.type.DateTime start = 1;</code>

@return The start.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/DateTimeRange.java