fixes https://github.com/common-workflow-language/cwltool/issues/992
fixes https://github.com/common-workflow-language/cwltool/issues/992

common-workflow-language/cwltool,dleehr/cwltool,dleehr/cwltool,dleehr/cwltool,common-workflow-language/cwltool,dleehr/cwltool,common-workflow-language/cwltool