/**
* tree of a given path
*
* @param string $ref reference
* @param string|Object $path path
*
* @throws \RuntimeException
* @return string
*/
public function tree($ref = 'HEAD', $path = null)
{
if ($path instanceof Object) {
$subjectPath = $path->getFullPath() . ($path->isTree() ? '/' : '');
} else {
$subjectPath = $path;
}
$what = $ref;
if ($ref instanceof TreeishInterface) {
$what = $ref->getSha();
}
$this->clearAll();
$this->addCommandName(self::LS_TREE_COMMAND);
$this->addCommandArgument('-l');
$subject = $what;
$this->addCommandSubject($subject);
$this->addPath($subjectPath);
return $this->getCommand();
}
