public function disc(string $storage)
  {
    if (isset($this->storage[$storage])) {
      $this->disc = strtolower($storage);
      return $this;
    }

    throw new UnknownStorageException;
  }
public function disc(string $storage)
  {
    if (isset($this->storage[$storage])) {
      $this->disc = strtolower($storage);
      return $this;
    }

    throw new UnknownStorageException;
  }
public function disc ( string $ storage ) { if ( isset ( $ this -> storage [ $ storage ] ) ) { $ this -> disc = strtolower ( $ storage ) ; return $ this ; } throw new UnknownStorageException ; }
Set default disc storage

@param string $storage
@return void
Set default disc storage