// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

// interfaces

// libraries

// contracts

interface IIntrospectionBase {
    error Introspection_AlreadySupported();
    error Introspection_NotSupported();

    /**
     * @notice Emitted when an interface is added to the contract via `_addInterface`.
     */
    event InterfaceAdded(bytes4 indexed interfaceId);

    /**
     * @notice Emitted when an interface is removed from the contract via `_removeInterface`.
     */
    event InterfaceRemoved(bytes4 indexed interfaceId);
}