classDiagram

    Agent
    AgentChannel

    AggregatorAgent --> AggregatorMode
    class AggregatorMode {
        <<Enum>>
        Flat
        Nested
    }
    
    Agent <|-- AggregatorAgent
    AggregatorAgent --> AggregatorChannel
    class AggregatorAgent {
        <<Final>>
        +AggregatorMode Mode
        #IEnumerable~String~ GetChannelKeys()
        #Task~AgentChannel~ CreateChannelAsync()
    }
    
    AgentChannel <|-- AggregatorChannel
    class AggregatorChannel {
        <<Final>>
        ~#IAsyncEnumerable~ChatMessageContent~ InvokeAsync(AggregatorAgent agent)
        ~#IAsyncEnumerable~ChatMessageContent~ GetHistoryAsync()
        ~#Task ReceiveAsync(IReadOnlyList~ChatMessageContent~ history)
    }