Adopt variadic methods throughout because it enforces types. DX

example adoption:

From BeforeAdoption.
a.) class: Geocoder\ProviderAggregator
b.) method def: registerProviders(array $providers = []);
c.) sample method call: $geocoder->registerProviders([new \Geocoder\Provider\GoogleMaps\GoogleMaps($adapter), new \Geocoder\Provider\Yandex\Yandex($adapter),]);

To AfterAdoption.
a.) class: Geocoder\ProviderAggregator
b.) method def: registerProviders(Providers ...$providers);
c.) method call: $geocoder->registerProviders(new \Geocoder\Provider\GoogleMaps\GoogleMaps($adapter));
d.) method call: $geocoder->registerProviders(new \Geocoder\Provider\GoogleMaps\GoogleMaps($adapter), new XXProvider);
e.) method call: $providers = [new \Geocoder\Provider\GoogleMaps\GoogleMaps($adapter), new \Geocoder\Provider\Yandex\Yandex($adapter),]; $geocoder->registerProviders(... $providers);

首先定位 Geocoder\ProviderAggregator 类及其 registerProviders 方法。检查当前基于数组的签名和调用，然后识别“throughout”涵盖的其他方法。当受影响的方法接受类型化的可变参数 providers，并且其调用按描述支持单个 provider 和解包后的数组时，即表示完成。