code: def eth_getBlockByNumber(self, block=BLOCK_TAG_LATEST, tx_objects=True):
          
          block = validate_block(block)
          return self._call("eth_getBlockByNumber", [block, tx_objects])
docs: TODO: documentation
  
          https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_getblockbynumber
  
          TESTED