Interface DerivedOperationContext

interface DerivedOperationContext {
    mcpReq: {
        _meta?: { progressToken?: string | number };
        signal: AbortSignal;
        notify(
            notification: {
                method: "notifications/progress";
                params: {
                    message?: string;
                    progress: number;
                    progressToken: string | number;
                    total?: number;
                };
            },
        ): Promise<void>;
    };
}