public com.google.cloud.vision.v1p4beta1.Product.KeyValue getProductLabels(int index) {
    return productLabels_.get(index);
  }
public com . google . cloud . vision . v1p4beta1 . Product . KeyValue getProductLabels ( int index ) { return productLabels_ . get ( index ) ; }
<pre>
Key-value pairs that can be attached to a product. At query time,
constraints can be specified based on the product_labels.
Note that integer values can be provided as strings, e.g. "1199". Only
strings with integer values can match a range-based restriction which is
to be supported soon.
Multiple values can be assigned to the same key. One product may have up to
100 product_labels.
</pre>

<code>repeated .google.cloud.vision.v1p4beta1.Product.KeyValue product_labels = 5;</code>