Interface ExecutionEventBus

interface ExecutionEventBus {
    finished(): void;
    off(
        eventName: ExecutionEventName,
        listener: (event: AgentExecutionEvent) => void,
    ): this;
    on(
        eventName: ExecutionEventName,
        listener: (event: AgentExecutionEvent) => void,
    ): this;
    once(
        eventName: ExecutionEventName,
        listener: (event: AgentExecutionEvent) => void,
    ): this;
    publish(event: AgentExecutionEvent): void;
    removeAllListeners(eventName?: ExecutionEventName): this;
}