@java.lang.Override
  public final boolean isInitialized() {
    byte isInitialized = memoizedIsInitialized;
    if (isInitialized == 1) return true;
    if (isInitialized == 0) return false;

    memoizedIsInitialized = 1;
    return true;
  }
<pre>
Required. The resource name for the Product to be added to this ProductSet.

Format is:
`projects/PROJECT_ID/locations/LOC_ID/products/PRODUCT_ID`
</pre>

<code>
string product = 2 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
</code>

@return The bytes for product.
java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/AddProductToProductSetRequest.java