def METHOD_NAME(self):
    portal_catalog = getToolByName(self.portal, "portal_catalog")
    portal_catalog.addColumn("new_metadata")
    self.assertTrue("new_metadata" in portal_catalog.schema())
    self.assertFalse("new_metadata" in portal_catalog.indexes())
    r = check_id(self.folder, "new_metadata")
    self.assertEqual(r, "new_metadata is reserved.")