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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 reparse(self):
        '''Reparse all children of this directory.

        This effectively rebuilds the tree below this node.

        This operation takes an unbounded time to complete; if there are a lot
        of objects registered below this directory's context, they will all
        need to be parsed.

        '''
        self._remove_all_children()
        self._parse_context(self._context, self.orb)