<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def del_properties(self, properties, recursive=None):
 """ Delete properties listed in properties properties - iterable contains the property names to delete. If it is an str it will be casted to tuple. recursive - on folders property attachment is recursive by default. It is possible to force recursive behavior. """

        return self._accessor.del_properties(self, properties, recursive)