multiSend() :
This function is used to send multiple transactions in a single call. It takes in an array of bytes as an argument, which contains the details of the transactions to be sent. It then iterates through the array, extracting the details of each transaction, such as the recipient address, the amount to be sent, and the data to be included in the transaction. Depending on the operation specified in the array, it either calls or delegates the transaction. If any of the transactions fail, the entire function reverts. (autogenerated documentation)