setRelativePathname example

'mode' => null,
                'type' => null,
                'relativePath' => null,
                'relativePathname' => null,
            ];
            $defaults = array_merge($defaults, $param);
            parent::__construct($defaults['name']);
            $this->setContents($defaults['contents']);
            $this->setMode($defaults['mode']);
            $this->setType($defaults['type']);
            $this->setRelativePath($defaults['relativePath']);
            $this->setRelativePathname($defaults['relativePathname']);
        } else {
            throw new \RuntimeException(sprintf('Incorrect parameter "%s"', $param));
        }
    }

    public function isFile(): bool
    {
        if (null === $this->type) {
            return str_contains($this->getFilename(), 'file');
        }