code: func (c *Client) SendToAddress(address btcutil.Address, amount btcutil.Amount) (*chainhash.Hash, error) {
  	return c.SendToAddressAsync(address, amount).Receive()
  }
docs: // SendToAddress sends the passed amount to the given address.
  //
  // See SendToAddressComment to associate comments with the transaction in the
  // wallet.  The comments are not part of the transaction and are only internal
  // to the wallet.
  //
  // NOTE: This function requires to the wallet to be unlocked.  See the
  // WalletPassphrase function for more details.