// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IInterfaceResolver {
    event InterfaceChanged(
        bytes32 indexed node,
        bytes4 indexed interfaceID,
        address implementer
    );

    /// Returns the address of a contract that implements the specified interface for this name.
    /// If an implementer has not been set for this interfaceID and name, the resolver will query
    /// the contract at `addr()`. If `addr()` is set, a contract exists at that address, and that
    /// contract implements EIP165 and returns `true` for the specified interfaceID, its address
    /// will be returned.
    /// @param node The ENS node to query.
    /// @param interfaceID The EIP 165 interface ID to check for.
    /// @return The address that implements this interface, or 0 if the interface is unsupported.
    function interfaceImplementer(
        bytes32 node,
        bytes4 interfaceID
    ) external view returns (address);
}