public function testNormaliseOtherDigits()
 {
     $this->markTestSkipped('PHP UTF-8 toUpper incompatible');
     $inputNumber = "2" . "5٥";
     $expectedOutput = "255";
     $this->assertEquals($expectedOutput, $this->phoneUtil->normalize($inputNumber), "Conversion did not correctly replace non-latin digits");
     // Eastern-Arabic digits.
     $inputNumber = "۵" . "2۰";
     $expectedOutput = "520";
     $this->assertEquals($expectedOutput, $this->phoneUtil->normalize($inputNumber), "Conversion did not correctly replace non-latin digits");
 }