def match_neighbors (self, descriptions):
		if not descriptions:
			return self.peers.keys()

		returned = []
		for key in self.peers:
			for description in descriptions:
				if Reactor.match_neighbor(description,key):
					if key not in returned:
						returned.append(key)
		return returned
return the sublist of peers matching the description passed, or None if no description is given
dataset/ETHPy150Open Exa-Networks/exabgp/lib/exabgp/reactor/loop.py/Reactor.match_neighbors