private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.visionai.v1.Series,
            com.google.cloud.visionai.v1.Series.Builder,
            com.google.cloud.visionai.v1.SeriesOrBuilder>
        getSeriesFieldBuilder() {
      if (seriesBuilder_ == null) {
        seriesBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.visionai.v1.Series,
                com.google.cloud.visionai.v1.Series.Builder,
                com.google.cloud.visionai.v1.SeriesOrBuilder>(
                getSeries(), getParentForChildren(), isClean());
        series_ = null;
      }
      return seriesBuilder_;
    }
<pre>
Required. The resource being updated
</pre>

<code>.google.cloud.visionai.v1.Series series = 2 [(.google.api.field_behavior) = REQUIRED];
</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/UpdateSeriesRequest.java