--- /dev/null
+cwlVersion: v1.0
+class: Workflow
+$namespaces:
+ arv: "http://arvados.org/cwl#"
+requirements:
+ SubworkflowFeatureRequirement: {}
+
+inputs: []
+
+outputs: []
+
+steps:
+ echo-subwf:
+ requirements:
+ arv:RunInSingleContainer: {}
+ run: echo-subwf.cwl
+ in: []
+ out: []