def getlist(self, key):
        try:
            return dict.__getitem__(self, key)
        except KeyError:
            return []
Validate a command line option containing a FilePath.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-0.96/django/utils/datastructures.py/MultiValueDict.getlist--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/admin/cleanup.py/_existing_file_path_option