Thumbor\Url\CommandSet::trim PHP Метод

    public function trim($colourSource = null, $tolerance = null)
    {
        $this->trim = 'trim';
        $this->trim .= $colourSource ? ":{$colourSource}" : '';
        $this->trim .= $tolerance ? ":{$tolerance}" : '';
    }

 public function testTrim()
 {
     $commandSet = new CommandSet();
     $commandSet->trim();
     $this->assertEquals(array('trim'), $commandSet->toArray());
     $commandSet->trim('bottom-right');
     $this->assertEquals(array('trim:bottom-right'), $commandSet->toArray());
 }