public static com.google.cloud.tpu.v2.RuntimeVersion getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }
<pre>
The runtime version.
</pre>

<code>string version = 2;</code>

@param value The bytes for version to set.
@return This builder for chaining.
java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/RuntimeVersion.java