public Builder setRuntimeVersionBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      runtimeVersion_ = value;
      bitField0_ |= 0x00000020;
      onChanged();
      return this;
    }
<pre>
Required. The runtime version running in the Node.
</pre>

<code>string runtime_version = 11 [(.google.api.field_behavior) = REQUIRED];</code>

@param value The bytes for runtimeVersion to set.
@return This builder for chaining.
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/Node.java