public Builder setProductSetPurgeConfig(
        com.google.cloud.vision.v1.ProductSetPurgeConfig value) {
      if (productSetPurgeConfigBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        target_ = value;
        onChanged();
      } else {
        productSetPurgeConfigBuilder_.setMessage(value);
      }
      targetCase_ = 2;
      return this;
    }
<pre>
Specify which ProductSet contains the Products to be deleted.
</pre>

<code>.google.cloud.vision.v1.ProductSetPurgeConfig product_set_purge_config = 2;</code>
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/PurgeProductsRequest.java