Given one or more validation reports, produce XML that can be used on the reserved validation-status port. If any of the reports contain errors, the validation status will be 'error'. Otherwise, it will be 'ok'.
| Port | Description |
| source primary sequence | One or more validation reports (http://code.google.com/p/daisy-pipeline/wiki/ValidationReportXML). |
| Port | Description |
| result primary | Validation status (http://daisy.github.io/pipeline/StatusXML). |