@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(instanceUid_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 3, instanceUid_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(instance_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 4, instance_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(kmsKey_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 5, kmsKey_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(uid_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 6, uid_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(7, getCreateTime());
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Output only. The time when the backup collection was created.
</pre>

<code>.google.protobuf.Timestamp create_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/BackupCollection.java