def __init__(self, stepname):
     ProcessStep.__init__(self)
     self.stepname = stepname
    def __init__(self, stepname, filename, version):
        ProcessStep.__init__(self)

        self.stepname = stepname
        self.filename = filename
        self.version = version
 def __init__(self, stepname, fetchname):
     ProcessStep.__init__(self)
     self.stepname = stepname
     self.fetchname = fetchname