@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(fileName_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, fileName_);
    }
    if (sizeBytes_ != 0L) {
      output.writeInt64(2, sizeBytes_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(3, getCreateTime());
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Output only. The time when the backup file was created.
</pre>

<code>.google.protobuf.Timestamp create_time = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/BackupFile.java