'Populate an \'out\' dictionary with mapping names to Python values
decoded from an \'in\' AmpBox mapping strings to string values.
@param name: the argument name to retrieve
@type name: C{bytes}
@param strings: The AmpBox to read string(s) from, a mapping of
argument names to string values.
@type strings: AmpBox
@param objects: The dictionary to write object(s) to, a mapping of
names to Python objects. Keys will be native strings.
@type objects: dict
@param proto: an AMP instance.'

def fromBox(self, name, strings, objects, proto):

    st = self.retrieve(strings, name, proto)
    nk = _wireNameToPythonIdentifier(name)
    if (self.optional and (st is None)):
        objects[nk] = None
    else:
        objects[nk] = self.fromStringProto(st, proto)
