public function setup() {
		$input_keys = array_keys((array) elgg_get_config('input'));
		$request_keys = array_keys((array) $_REQUEST);
		$keys = array_unique(array_merge($input_keys, $request_keys));
		foreach ($keys as $key) {
			if ($key) {
				$this->params->$key = get_input($key);
			}
		}
	}