title: change and update twilio serverless function
body: <p>I have deployed few functions in twilio serverless.If I mistakenly delet that local file from where I deployed the function.Or if this function is deployed by someone else.As there is no way to change the functions from UI,we must have to do it from cli.</p>
  <p>The way I found is fetching,updating,building,deploying function by providing its service ,enviornment ,function ,build,deploy sid each time by function api by curl/twilio cli.Its very tedious and error prone to provide all those sid mentioned above. there should be an easy way just like when I have all the file locally and with a one twilio cli command I can change and deploy.</p>
  <p>Whats the easiest way to download the  file  from serverless to local environment to change  and re-deploy it again from cli just like I did first time( just run twilio serveless:deploy )?</p>