@java.lang.Override
  public com.google.protobuf.ByteString getServiceAttachmentBytes() {
    java.lang.Object ref = serviceAttachment_;
    if (ref instanceof java.lang.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>
Required. 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) = REQUIRED, (.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/PscConnection.java