code: def all_events_filter(
              self,
              from_block: BlockSpecification = GENESIS_BLOCK_NUMBER,
              to_block: BlockSpecification = 'latest',
      ) -> StatelessFilter:
          
          return self.events_filter(None, from_block, to_block)
docs: 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.