After a buyer locks a commission, if he wants to cancel the purchase during the lock-in period, he can call this transaction. The locked cess will then be returned to the buyer's wallet free balance.
/// Cancels a purchase action during the lock-in period and returns the locked funds to the buyer's wallet.////// After a buyer locks a commission, they can call this transaction to cancel the purchase /// during the lock-in period. The locked funds will then be returned to the buyer's free balance.////// # Arguments////// * `token` - A reference to a string slice that holds the authentication token.////// # Returns////// This function returns a `Result` which is:/// * `Ok((TxHash, CancelPurchaseAction))` - A tuple containing the transaction hash and the `CancelPurchaseAction` struct.
/// * `Err(Box<dyn std::error::Error>)` - An error if the transaction fails.///pubasyncfncancel_purchase_action(&self, token:&str,) ->Result<(TxHash, CancelPurchaseAction), Box<dyn std::error::Error>>