function implementation() external view returns (address)
function owner() external view returns (address)
Returns the address of the current owner.
function renounceOwnership() external nonpayable
Leaves the contract without owner. It will not be possible to call
onlyOwner functions anymore. Can only be called by the current owner. NOTE: Renouncing ownership will leave the contract without an owner, thereby removing any functionality that is only available to the owner.
function transferOwnership(address newOwner) external nonpayable
Transfers ownership of the contract to a new account (
newOwner). Can only be called by the current owner.
function upgradeImplementationTo(address newImplementation) external nonpayable
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner)
event Upgraded(address newImplementation)