private void ensureTensorflowVersionsIsMutable() {
      if (!((bitField0_ & 0x00000001) != 0)) {
        tensorflowVersions_ =
            new java.util.ArrayList<com.google.cloud.tpu.v1.TensorFlowVersion>(tensorflowVersions_);
        bitField0_ |= 0x00000001;
      }
    }
<pre>
Response for
[ListTensorFlowVersions][google.cloud.tpu.v1.Tpu.ListTensorFlowVersions].
</pre>

Protobuf type {@code google.cloud.tpu.v1.ListTensorFlowVersionsResponse}
java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/ListTensorFlowVersionsResponse.java