ethSaleAmount()

    function ethSaleAmount() external view returns (EthSaleAmount memory);

This function returns a set of values indicating the maximum and current ETH that is available for sale

Example

ethSaleAmount()
returns (
    struct EthSaleAmount {
        uint128 initial;//the initial amount (and max available)
        uint128 current;//the current amount of ETH available for sale
        }
)