@property<EOL><INDENT>def prefetch_validity_in_millis(self):<DEDENT>
return self._prefetch_validity_in_millis<EOL>
Prefetch validity in milliseconds.

:getter: Returns the prefetch validity in milliseconds.
:setter: Sets for how long the pre-fetched IDs can be used.
    If this time elapses, a new batch of IDs will be fetched.
    Time unit is milliseconds, default is 600,000 (10 minutes).
    The IDs contain timestamp component, which ensures rough global ordering of IDs.
    If an ID is assigned to an object that was created much later, it will be much out of order.
    If you don't care about ordering, set this value to 0.
:type: int