public com.google.protobuf.ByteString getInputUriBytes() {
      java.lang.Object ref = inputUri_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        inputUri_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<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