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

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

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

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

  '
enum:
- stderr
type: string