function setAdmin(address newAdmin_) external

function setDummyImplementation(address newDummyImplementation_) external

function addImplementation(address implementation_, bytes4[] sigs_) external

function removeImplementation(address implementation_) external

function getAdmin() external view returns (address)

function getDummyImplementation() external view returns (address)

function getImplementationSigs(address impl_) external view returns (bytes4[])

function getSigsImplementation(bytes4 sig_) external view returns (address)

function readFromStorage(bytes32 slot_) external view returns (uint256 result_)