metric ?? null; if (isset($metric)) { return "/_watcher/stats/$metric"; } return "/_watcher/stats"; } public function getParamWhitelist(): array { return [ 'metric', 'emit_stacktraces' ]; } public function getMethod(): string { return 'GET'; } public function setMetric($metric): Stats { if (isset($metric) !== true) { return $this; } if (is_array($metric) === true) { $metric = implode(",", $metric); } $this->metric = $metric; return $this; } }