public function map_group_forum_meta_caps( $caps = array(), $cap = '', $user_id = 0, $args = array() ) {

		switch ( $cap ) {

			// If user is a group mmember, allow them to create content.
			case 'read_forum'          :
			case 'publish_replies'     :
			case 'publish_topics'      :
			case 'read_hidden_forums'  :
			case 'read_private_forums' :
				if ( bbp_group_is_banned() ) {
					$caps = array( 'do_not_allow' );
				} elseif ( bbp_group_is_member() || bbp_group_is_mod() || bbp_group_is_admin() ) {
					$caps = array( 'participate' );
				}
				break;

			// If user is a group mod ar admin, map to participate cap.
			case 'moderate'            :
			case 'edit_topic'          :
			case 'edit_reply'          :
			case 'view_trash'          :
			case 'edit_others_replies' :
			case 'edit_others_topics'  :
				if ( bbp_group_is_mod() || bbp_group_is_admin() ) {
					$caps = array( 'participate' );
				}
				break;

			// If user is a group admin, allow them to delete topics and replies.
			case 'delete_topic' :
			case 'delete_reply' :
				if ( bbp_group_is_admin() ) {
					$caps = array( 'participate' );
				}
				break;
		}

		// Filter & return
		return (array) apply_filters( 'bbp_map_group_forum_topic_meta_caps', $caps, $cap, $user_id, $args );
	}