| Index: lib/subscriptionClasses.js | 
| =================================================================== | 
| --- a/lib/subscriptionClasses.js | 
| +++ b/lib/subscriptionClasses.js | 
| @@ -147,16 +147,24 @@ | 
| }, | 
| serializeFilters(buffer) | 
| { | 
| for (let filter of this.filters) | 
| buffer.push(filter.text.replace(/\[/g, "\\[")); | 
| }, | 
| + /** | 
| + * Releases any internal references to the object. | 
| + */ | 
| + free() | 
| + { | 
| + Subscription.knownSubscriptions.delete(this.url); | 
| + }, | 
| + | 
| toString() | 
| { | 
| let buffer = []; | 
| this.serialize(buffer); | 
| return buffer.join("\n"); | 
| } | 
| }; |