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Stores the last value received, can receive at most one value per step.
LastValue( self, typ: Any, key: str = '', )
Generic[Value]
BaseChannel[Value, Value, Value]
The type of the value stored in the channel.
The type of the update received by the channel.
Return a copy of the channel.
Notify the channel that a subscribed task ran.
Notify the channel that the Pregel run is finishing.