code: def showRejectionMessage(worksheet):
      
      if hasattr(worksheet, 'replaced_by'):
          uc = getToolByName(worksheet, 'uid_catalog')
          uid = getattr(worksheet, 'replaced_by')
          _ws = uc(UID=uid)[0].getObject()
          msg = _("This worksheet has been rejected.  The replacement worksheet is ${ws_id}",
                  mapping={'ws_id':_ws.getId()})
          worksheet.plone_utils.addPortalMessage(msg)
      if hasattr(worksheet, 'replaces_rejected_worksheet'):
          uc = getToolByName(worksheet, 'uid_catalog')
          uid = getattr(worksheet, 'replaces_rejected_worksheet')
          _ws = uc(UID=uid)[0].getObject()
          msg = _("This worksheet has been created to replace the rejected "
                  "worksheet at ${ws_id}",
                  mapping={'ws_id':_ws.getId()})
          worksheet.plone_utils.addPortalMessage(msg)
docs: Adds a portalMessage if
          a) the worksheet has been rejected and replaced by another or
          b) if the worksheet is the replacement of a rejected worksheet.
          Otherwise, does nothing.