Class Extension For Plugin

[John 3:16]

I am trying my best to create a plugin I need, I'm not a dev, when I am doing this coding I kinda feel like a fish out of water.  That said, can any dev tell me what Class I extend to tap Topics.  I am trying to hide topics per group in a single forum.  So, that is my question, what Class do I extend and tap into, the rest I will try and muddle through myself.

[Marcher Technologies]

\IPS\forums\Topic. Likely would want to hook into either getItemsWithPermission or getItemsWithPermissionWhere.

[John 3:16]

Sweet! Thanks Marcher!