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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 all_events_filter( self, from_block: BlockSpecification = GENESIS_BLOCK_NUMBER, to_block: BlockSpecification = 'latest', ) -> StatelessFilter: """ Install a new filter for all the events emitted by the current token network contract Args: from_block: Create filter starting from this block number (default: 0). to_block: Create filter stopping at this block number (default: 'latest'). Return: The filter instance. """

        return self.events_filter(None, from_block, to_block)