/**
* Adds (single|array of) directories to parse for files
*
* @param string|array $readDirectories Directories to scan for files to mock
*/
public function addReadDirectories($readDirectories)
{
$dirs = is_array($readDirectories) ? $readDirectories : array($readDirectories);
$formattedDirs = Formatter::formatDirectoryPaths($dirs);
DirectoryWorker::validateReadDirs($formattedDirs);
$this->setReadDirectories(array_merge($this->readDirectories, $formattedDirs));
}
