docs: @BetaApi
    public final InterconnectAttachment getInterconnectAttachment(
        ProjectRegionInterconnectAttachmentName interconnectAttachment) {
  
      GetInterconnectAttachmentHttpRequest request =
          GetInterconnectAttachmentHttpRequest.newBuilder()
              .setInterconnectAttachment(
                  interconnectAttachment == null ? null : interconnectAttachment.toString())
              .build();
      return getInterconnectAttachment(request);
    }