public async Task <IActionResult> Post(string emailId, [FromBody] string[] requests, string driveName = null)
 {
     try
     {
         var emailAttachments = _manager.AddFileAttachments(emailId, requests, driveName);
         return(Ok(emailAttachments));
     }
     catch (Exception ex)
     {
         return(ex.GetActionResult());
     }
 }