public function get_users_for_object( $object_id = 0, $meta_key = '', $meta_type = 'post' ) {

		// Try to get user IDs from cache
		$user_ids = $this->cache_get( $meta_key, $object_id );

		// Cache is empty, so hit the database
		if ( false === $user_ids ) {
			$option_key = $this->get_user_option_key( $meta_key, $object_id, true );
			$bbp_db     = bbp_db();
			$user_ids   = $bbp_db->get_col( "SELECT user_id FROM {$bbp_db->usermeta} WHERE meta_key = '{$option_key}' and FIND_IN_SET('{$object_id}', meta_value) > 0" );

			// Always cache results (even if empty, to prevent multiple misses)
			$this->cache_set( $meta_key, $object_id, $user_ids );
		}

		// Return parsed IDs
		return $this->parse_comma_list( $user_ids );
	}