How to use the pyflow.demo.envDemo.envDemo.EnvWorkflow function in pyflow

self.addTask("testAugmentedEnv", "[ $FOO == 'BAZ' ]; exit $?", env=augmented_env)

        # test funny characters that have shown to cause trouble on some sge installations
        funky_env = {}
        funky_env["PATH"] = "/bin"
        funky_env["_"] = "| %s %F \n"
        # in this case we just want the job to run at all:
        self.addTask("testFunkyEnv", "echo 'foo'; exit $?", env=funky_env)

        assert("FOO" not in os.environ)



# Instantiate the workflow
#
wflow = EnvWorkflow()

# Run the worklow:
#
retval = wflow.run(mode="local")

sys.exit(retval)