docs: def files(self):
          """ File uploads parsed from an `url-encoded` or `multipart/form-data`
              encoded POST or PUT request body. The values are instances of
              :class:`cgi.FieldStorage`. The most important attributes are:
  
              filename
                  The filename, if specified; otherwise None; this is the client
                  side filename, *not* the file name on which it is stored (that's
                  a temporary file you don't deal with)
              file
                  The file(-like) object from which you can read the data.
              value
                  The value as a *string*; for file uploads, this transparently
                  reads the file every time you request the value. Do not do this
                  on big files.
          """
          files = FormsDict()
          for name, item in self.POST.iterallitems():
              if hasattr(item, 'filename'):
                  files[name] = item
          return files