r descriptors with the given fingerprints. If no
fingerprints are provided then this returns all descriptors known
by the relay.

:param str,list fingerprints: fingerprint or list of fingerprints to be
  retrieved, gets all descriptors if **None**
:param query_args: additional arguments for the
  :class:`~stem.descriptor.remote.Query` constructor

:returns: :class:`~stem.descriptor.remote.Query` for the server descriptors

:raises: **ValueError** if we request more than 96 descriptors by their
  fingerprints (this is due to a limit on the url length by squid proxies).
z/tor/server/allúJUnable to request more than %i descriptors at a time by their fingerprintsz