Values of this type are objects. They contain these properties:

extensionId

A string. The ID of the extension, if this rule belongs to a different extension. This property is only available when used with declarativeNetRequest.testMatchOutcome, with the includeOtherExtensions option set to true.

ruleId

A number. The matching rule's ID.

rulesetId

A string. The ID of the ruleset this rule belongs to. The value returned is:

• For a rule originating from the set of static rules, the value specified in the "id" key of the ruleset in the declarative_net_request.rule_resources manifest key.
• For a rule originating from the set of dynamic rules, the value defined in declarativeNetRequest.DYNAMIC_RULESET_ID, i.e., "_dynamic".
• For a rule originating from the set of session rules, the value defined in declarativeNetRequest.SESSION_RULESET_ID, i.e., "_session".