'Splits the replication_driver_data into an array of ssn strings.
:param replication_driver_data: A string of comma separated SSNs.
:returns: SSNs in an array of strings.'

def _split_driver_data(self, replication_driver_data):

    ssnstrings = []
    if replication_driver_data:
        for str in replication_driver_data.split(','):
            ssnstring = str.strip()
            if ssnstring:
                ssnstrings.append(ssnstring)
    return ssnstrings
