def extractAPIKey(self,cs,raise_err=False):
'''if the user has supplied a connection string then they dont need to specify an API key in their config file, therefore we must extract it from the cs'''
srch = re.search('/([a-f0-9]{32})/(v/x|wfs\?)',cs,flags=re.IGNORECASE)
if srch is None and raise_err:
raise MalformedConnectionString('Cannot parse API key')
return srch.group(1) if srch else None