This object is used to control the enabling and disabling of statistics
for a policy attachment.
Set this object to true to enable statistics. Set this object to false
to disable statistics.
This object may be modified while the row is active. The desired value
must be set before the policy is attached or in a multiple object
varbind. Failure to do so will result in the policy being attached with
the previous value of usdPolicyStatsEnable.