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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _marshal(self, obj):
 """Walks an object and marshals any psphere object into MORs."""

        logger.debug("Checking if %s needs to be marshalled", obj)
        if isinstance(obj, ManagedObject):
            logger.debug("obj is a psphere object, converting to MOR")
            return obj._mo_ref

        if isinstance(obj, list):
            logger.debug("obj is a list, recursing it")
            new_list = []
            for item in obj:
                new_list.append(self._marshal(item))
            return new_list
                
        if not isinstance(obj, suds.sudsobject.Object):
            logger.debug("%s is not a sudsobject subclass, skipping", obj)
            return obj

        if hasattr(obj, '__iter__'):
            logger.debug("obj is iterable, recursing it")
            for (name, value) in obj:
                setattr(obj, name, self._marshal(value))
            return obj
            
        # The obj has nothing that we want to marshal or traverse, return it
        logger.debug("obj doesn't need to be marshalled")
        return obj