def catenate(self, *items):
        if not items:
            return ''
        items = [utils.unic(item) for item in items]
        if items[0].startswith('SEPARATOR='):
            sep = items[0][len('SEPARATOR='):]
            items = items[1:]
        else:
            sep = ' '
        return sep.join(items)
Adds additional field-specific formencode validators
dataset/ETHPy150Open shellderp/sublime-robot-plugin/lib/robot/libraries/BuiltIn.py/_Misc.catenate--crossover with--dataset/ETHPy150Open jacek99/corepost/corepost/routing.py/UrlRouter.addValidator