private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vision.v1p3beta1.ImportProductSetsInputConfig,
            com.google.cloud.vision.v1p3beta1.ImportProductSetsInputConfig.Builder,
            com.google.cloud.vision.v1p3beta1.ImportProductSetsInputConfigOrBuilder>
        getInputConfigFieldBuilder() {
      if (inputConfigBuilder_ == null) {
        inputConfigBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vision.v1p3beta1.ImportProductSetsInputConfig,
                com.google.cloud.vision.v1p3beta1.ImportProductSetsInputConfig.Builder,
                com.google.cloud.vision.v1p3beta1.ImportProductSetsInputConfigOrBuilder>(
                getInputConfig(), getParentForChildren(), isClean());
        inputConfig_ = null;
      }
      return inputConfigBuilder_;
    }
<pre>
Required. The input content for the list of requests.
</pre>

<code>
.google.cloud.vision.v1p3beta1.ImportProductSetsInputConfig input_config = 2 [(.google.api.field_behavior) = REQUIRED];
</code>
java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ImportProductSetsRequest.java