@java.lang.Override
  public com.google.protobuf.ByteString getEngineVersionBytes() {
    java.lang.Object ref = engineVersion_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      engineVersion_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }
<pre>
Output only. valkey-7.5/valkey-8.0, etc.
</pre>

<code>string engine_version = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@return The bytes for engineVersion.
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/Backup.java