amount_a_in and amount_b_in of tokens must be approved. Initial liquidity should be non-zero. All the storage parameters are reset to default values. The sender receives shares equal to a minimum of amount_a_in and amount_b_in. Tokens types must be provided in ascending order.a_to_b type is used to exchange token_a to token_b. b_to_a performs the opposite swap from token_b_address to token_a_address. The token_a and token_b are the corresponding tokens of pair_id pool. The amount_in of the token will be charged from the user. If the received amount is smaller than min_amount_out then the transaction is reverted. Tokens types must be provided in ascending order. Deadlines should be in the future.pair_id of the pool and swap_type to be executed; all the exchanges should be sequential.token_a_in and token_b_in must be approved. Initial liquidity should be non-zero. The sender spends token_a_in and token_b_in at most otherwise, the transaction fails. Tokens types must be provided in ascending order. Deadlines should be in the future.shares and sends tokens to the owner; operation is reverted if the amount of appropriate divested tokens is smaller than min_token_a_out or min_token_b_out. Tokens types must be provided in ascending order. Deadlines should be in the future.