def Usage(self):
    self.OptionParser.print_usage()
    sys.exit(1)
Add *element* to elements dictionary, keyed by name
dataset/ETHPy150Open esrlabs/git-repo/command.py/Command.Usage--crossover with--dataset/ETHPy150Open scanny/python-pptx/lab/parse_xsd/parse_xsd.py/TypeGraph.add_element