code: func (c *Client) RescanBlocks(blockHashes []chainhash.Hash) ([]btcjson.RescannedBlock, error) {
  	return c.RescanBlocksAsync(blockHashes).Receive()
  }
docs: // RescanBlocks rescans the blocks identified by blockHashes, in order, using
  // the client's loaded transaction filter.  The blocks do not need to be on the
  // main chain, but they do need to be adjacent to each other.
  //
  // NOTE: This is a btcsuite extension ported from
  // github.com/decred/dcrrpcclient.