code: def namedb_accounts_vest(cur, block_height):
      
      sql = 'SELECT * FROM account_vesting WHERE block_id = ?'
      args = (block_height,)
  
      vesting_rows = namedb_query_execute(cur, sql, args)
      rows = []
      for row in vesting_rows:
          tmp = {}
          tmp.update(row)
          rows.append(tmp)
  
      for row in rows:
          addr = row['address']
          token_type = row['type']
          token_amount = row['vesting_value']
  
          log.debug("Vest {} with {} {}".format(addr, token_amount, token_type))
          
          fake_txid = namedb_vesting_txid(addr, token_type, token_amount, block_height)
  
          res = namedb_account_credit(cur, addr, token_type, token_amount, block_height, 0, fake_txid)
          if not res:
              traceback.print_stack()
              log.fatal('Failed to vest {} {} to {}'.format(token_amount, token_type, addr))
              os.abort()
  
      return True
docs: Vest tokens at this block to all recipients.
      Goes through the vesting table and debits each account that should vest on this block.