@java.lang.Override
  public boolean hasProduct() {
    return ((bitField0_ & 0x00000001) != 0);
  }
<pre>
Required. The Product resource which replaces the one on the server.
product.name is immutable.
</pre>

<code>.google.cloud.vision.v1.Product product = 1 [(.google.api.field_behavior) = REQUIRED];
</code>

@return Whether the product field is set.
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/UpdateProductRequest.java