description: 'Indicates that the data pushed to the standard output stream by the
  command will be redirected to this CWL output.

  Can be defined for only one output. If combined with ''stdout'' at the root of the
  CWL document, that definition

  will indicate the desired name of the output file where the output stream will be
  written to. A random name will

  be applied for the file of this output unless otherwise specified.

  '
enum:
- stdout
type: string