code: def get_block(self, block_id):
          
  
          block = backend.query.get_block(self.connection, block_id)
          latest_block = self.get_latest_block()
          latest_block_height = latest_block['height'] if latest_block else 0
  
          if not block and block_id > latest_block_height:
              return
  
          result = {'height': block_id,
                    'transactions': []}
  
          if block:
              transactions = backend.query.get_transactions(self.connection, block['transactions'])
              result['transactions'] = [t.to_dict() for t in Transaction.from_db(self, transactions)]
  
          return result
docs: Get the block with the specified `block_id`.
  
          Returns the block corresponding to `block_id` or None if no match is
          found.
  
          Args:
              block_id (int): block id of the block to get.