IsoCodes\SwiftBic::validate PHP Method

    public static function validate($swiftbic)
    {
        $regexp = '/^([a-zA-Z]){4}([a-zA-Z]){2}([0-9a-zA-Z]){2}([0-9a-zA-Z]{3})?$/';
        return (bool) preg_match($regexp, $swiftbic);
    }

 /**
  * testInvalidSwiftBic
  *
  * @param mixed $swiftBic
  *
  * @dataProvider getInvalidSwiftBic
  *
  * return void
  */
 public function testInvalidSwiftBic($swiftBic)
 {
     $this->assertFalse(SwiftBic::validate($swiftBic));
 }