protected function copy($source, $target): void
    {
        // skip, if not exists
        if (!file_exists($source)) {
            return;
        }
        // skip, if target exists
        if (is_file($target) && !is_dir($target)) {
            $this->installer->getIo()->write(
                sprintf('  - File <comment>%s</comment> already exists', $target),
                true,
                IOInterface::VERBOSE
            );
            return;
        }

        // Check the renaming of file for direct moving (file-to-file)
        $isRenameFile = substr($target, -1) !== '/' && !is_dir($source);

        if (file_exists($target) && !is_dir($target) && !$isRenameFile) {
            throw new \InvalidArgumentException('Destination directory is not a directory');
        }

        try {
            if ($isRenameFile) {
                $this->getFilesystem()->mkdir(\dirname($target));
            } else {
                $this->getFilesystem()->mkdir($target);
            }
        } catch (IOException $e) {
            throw new \InvalidArgumentException(
                sprintf('Could not create directory `%s`', $target)
            );
        }

        if (false === file_exists($source)) {
            throw new \InvalidArgumentException(
                sprintf('Source directory or file `%s` does not exist', $source)
            );
        }

        if (is_dir($source)) {
            $finder = new Finder;
            $finder->files()->in($source);

            foreach ($finder as $file) {
                try {
                    $this->getFilesystem()->copy($file, $target . DS . $file->getRelativePathname());
                } catch (IOException $e) {
                    throw new \InvalidArgumentException(
                        sprintf('Could not copy `%s`', $file->getBaseName())
                    );
                }
            }
        } else {
            try {
                if ($isRenameFile) {
                    $this->getFilesystem()->copy($source, $target);
                } else {
                    $this->getFilesystem()->copy($source, $target . '/' . basename($source));
                }
            } catch (IOException $e) {
                throw new \InvalidArgumentException(sprintf('Could not copy `%s`', $source));
            }
        }

        $this->installer->getIo()->write(
            sprintf('  - Copied file(s) from <comment>%s</comment> to <comment>%s</comment>', $source, $target),
            true,
            IOInterface::VERBOSE
        );
    }