public com.google.protobuf.ByteString getServiceAttachmentBytes() {
      java.lang.Object ref = serviceAttachment_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        serviceAttachment_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
Output only. The service attachment which is the target of the PSC
connection, in the form of
projects/{project-id}/regions/{region}/serviceAttachments/{service-attachment-id}.
</pre>

<code>
string service_attachment = 6 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
</code>

@return The bytes for serviceAttachment.
java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/PscAutoConnection.java