Flow\Helper::trim PHP Method

    public static function trim($obj = null, $charlist = " \t\n\r\v")
    {
        return trim(strval($obj), $charlist);
    }

 public function test_trim()
 {
     $this->assertEquals('foobar', Helper::trim('foobar '));
     $this->assertEquals('foobar', Helper::trim(' foobar'));
     $this->assertEquals('foo bar', Helper::trim(' foo bar '));
 }