private ComposeExtensionResponse GetComposeExtensionResponse(Activity activity)
{
var composeExtensionQuery = activity.GetComposeExtensionQueryData();
var composeExtParamValue = composeExtensionQuery.Parameters[0].Value.ToString();
// Process data and return the response.
ComposeExtensionResponse composeExtensionResponse = new ComposeExtensionResponse();
ComposeExtensionResult composeExtensionResult = new ComposeExtensionResult();
List <ComposeExtensionAttachment> lstComposeExtensionAttachment = new List <ComposeExtensionAttachment>();
string imageUrl = "https://luna1.co/cae4f2.png";
string deepLinkUrl = TemplateUtility.GetDeepLink(activity, composeExtParamValue);
lstComposeExtensionAttachment.Add(TemplateUtility.GenerateComposeExtentionAttachments(activity));
composeExtensionResult.Type = "result";
composeExtensionResult.AttachmentLayout = "list";
composeExtensionResult.Attachments = lstComposeExtensionAttachment;
composeExtensionResponse.ComposeExtension = composeExtensionResult;
return(composeExtensionResponse);
}