def __init__(self, enabled=False, days=None):
_validate_not_none("<STR_LIT>", enabled)<EOL>if enabled:<EOL><INDENT>_validate_not_none("<STR_LIT>", days)<EOL><DEDENT>self.enabled = enabled<EOL>self.days = days<EOL>
:param bool enabled: 
    Indicates whether a retention policy is enabled for the 
    storage service. If disabled, logging and metrics data will be retained 
    infinitely by the service unless explicitly deleted.
:param int days: 
    Required if enabled is true. Indicates the number of 
    days that metrics or logging data should be retained. All data older 
    than this value will be deleted. The minimum value you can specify is 1; 
    the largest value is 365 (one year).