Add the specified rule to the unique rule set of this object.
Add the specified ruleToAdd to the set of (unique) rules maintained by this object. Return the number of rules added (i.e., 1 on success and 0 if a rule with the same value is already present). The behavior is undefined unless a lock is not held by this thread on the mutex returned by rulesetMutex.
number of rules added (1 on success, 0 if already present)
| Name | Description |
|---|---|
| ruleToAdd | rule to add |