A HttpBodyFileUpload object wraps a file upload, presenting a way for extracting filename, contentType and the data of the uploaded file.

abstract class HttpBodyFileUpload {
 /**
  * The filename of the uploaded file.
  */
 String get filename;

 /**
  * The [ContentType] of the uploaded file. For 'text/\*' and
  * 'application/json' the [data] field will a String.
  */
 ContentType get contentType;

 /**
  * The content of the file. Either a [String] or a [List<int>].
  */
 dynamic get content;
}