title: Downloading Text File From AWS S3 in Swift 5
body: <p>This is likely a very easy answer. I am fairly new to Swift and just getting feet wet with AWS. I simply want to download a JSON file to a string var in Swift so that I can parse, etc. I'm not able to find a good example (other than a repetitive one showing how to download an image). </p>
  
  <p>I've seen the image example where the completion handler accesses the data i.e. <code>UIImage(data: data!)!</code> but I can't find the equivalent for a text file. </p>
  
  <p>I know that I am getting in via credentials and configuration and that it is all correct. 
  I just can't coax the text data out of the result. Here is the snippet I think should return what I want. I just need to know where it is...</p>
  
  <pre><code>func getJSON() {
  
      let S3BucketName: String = "mybucket"
      let S3DownloadKeyName: String = "myfile.txt"
  
      let expression = AWSS3TransferUtilityDownloadExpression()
      expression.progressBlock = {(task, progress) in DispatchQueue.main.async(execute: {
          print("Downloading...")
      })
      }
  
      let transferUtility = AWSS3TransferUtility.default()
      transferUtility.downloadData(fromBucket: S3BucketName, key: S3DownloadKeyName, expression: expression) { (task, URL, data, error) in
              if error != nil {
                  print(error!)
                  return
              }
              DispatchQueue.main.async(execute: {
                  print("Got here")
                  // I would expect to find data in an attribute here
              })
      }
  }
  </code></pre>
  
  <p>I would think the actual string could be coaxed from the "data" value in the completion handler, but I simply am not sure how to reach it or what property it exists in. I'm pretty sure I did an exhaustive search of a similar example that I could understand, but didn't find anything.</p>
  
  <p>Any help is greatly appreciated.</p>