@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>
A page token, received from a previous `ViewCollectionItemsRequest` call.
Provide this to retrieve the subsequent page.

When paginating, all other parameters provided to
`ViewCollectionItemsRequest` must match the call that provided the page
token.
</pre>

<code>string page_token = 3;</code>

@return The bytes for pageToken.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ViewCollectionItemsRequest.java