def __init__(self, config, networkmaps=set(), costmap=None, urls={}):
if (networkmaps is None) or (len(networkmaps) == 0):
raise Exception("Missing dependency: ECSLite requires network maps")
if costmap is None:
raise Exception("Missing dependency: ECSLite requires cost maps")
AbstractEndpointCostMapBackend.__init__(self, config)
self.networkmaps = networkmaps
self.costmap = costmap
self.urls = urls
