protected Local::removeDirectoryJailed($directory) Removes

abstract public FileTransfer::connect()

abstract protected FileTransfer::removeFileJailed($destination)

SSH::chmodJailed($path, $mode, $recursive) Changes

protected SSH::removeFileJailed($destination) Removes

abstract public FileTransfer::isDirectory($path)

public final FileTransfer::copyFile($source, $destination)

protected final FileTransfer::checkPath($path)

static FileTransfer::factory($jail, $settings)

FileTransferException class. Hierarchy class \Drupal\Core\FileTransfer\