'Find the root of a set of symbolic links.
This method returns the target of the link, or a Deferred that
returns the same.
@type path: L{bytes}
@param path: the path of the symlink to read.'

def readLink(self, path):

    d = self._sendRequest(FXP_READLINK, NS(path))
    return d.addCallback(self._cbRealPath)
