in src/inventory/readers.py [0:0]
def __init__(self, lambda_context, sts_client=boto3.client('sts'), mappers=[EC2DataMapper(), ElbDataMapper(), DynamoDbTableDataMapper(), RdsDataMapper()]):
self._lambda_context = lambda_context
self._sts_client = sts_client
self._mappers: List[DataMapper] = mappers