On this pageIDictionaryCore Git Source Functions getImplementation function getImplementation(bytes4 selector) external view returns (address); Events NewFunctionSelectorAdded event NewFunctionSelectorAdded(bytes4 newSelector); ImplementationDeleted event ImplementationDeleted(bytes4 selector); ImplementationUpgraded event ImplementationUpgraded(bytes4 selector, address implementation); Errors ImplementationNotFound error ImplementationNotFound(bytes4 selector); InvalidImplementation error InvalidImplementation(address implementation);