Create a `~lsst.pex.config.Config` from a stream.
Parameters
----------
cls : `lsst.pex.config.Config`-type
    A `lsst.pex.config.Config` type (not an instance) that is instantiated
    with configurations in the ``stream``.
stream : file-like object, `str`, or compiled string
    Stream containing configuration override code.
Returns
-------
config : `lsst.pex.config.Config`
    Config instance.
See also
--------
lsst.pex.config.Config.loadFromStream
 
Definition at line 1386 of file config.py.
 1387     """Create a `~lsst.pex.config.Config` from a stream. 
 1391     cls : `lsst.pex.config.Config`-type 
 1392         A `lsst.pex.config.Config` type (not an instance) that is instantiated 
 1393         with configurations in the ``stream``. 
 1394     stream : file-like object, `str`, or compiled string 
 1395         Stream containing configuration override code. 
 1399     config : `lsst.pex.config.Config` 
 1404     lsst.pex.config.Config.loadFromStream 
 1407     config.loadFromStream(stream)