/**
  * @param array $phoneNumbers
  * @return PhoneNumbers
  */
 public static function fromArray(array $phoneNumbers)
 {
     return new static(array_map(function ($phoneNumber) {
         return PhoneNumber::fromString($phoneNumber);
     }, $phoneNumbers));
 }
 /**
  * @test
  */
 public function itCanBeEmptyString()
 {
     $this->assertEmpty(PhoneNumber::fromString('')->toString());
 }