PhpCsFixer\Config::setCacheFile PHP Method

    public function setCacheFile($cacheFile)
    {
        $this->cacheFile = $cacheFile;
        return $this;
    }

 public function testThatCacheFileCanBeMutated()
 {
     $cacheFile = 'some-directory/some.file';
     $config = new Config();
     $config->setCacheFile($cacheFile);
     $this->assertSame($cacheFile, $config->getCacheFile());
 }