@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. BigQuery URI to a table, up to 2000 characters long.
Accepted forms:

*  BigQuery path. For example: `bq://projectId.bqDatasetId.bqTableId`.
</pre>

<code>string input_uri = 1 [(.google.api.field_behavior) = REQUIRED];</code>

@return The bytes for inputUri.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/BigQuerySource.java