void AddAttribute( int sequence, string attrName, System.Object value )

void AddAttribute( int sequence, System.Action<T> value )

void AddAttribute( int sequence, string name, EventCallback<TArgument> value )

void AddAttribute( int sequence, string attrName, System.Action value )

void AddAttribute( int sequence, string attrName, System.Func<Task> value )

void AddAttribute( int sequence, string attrName, System.Action<PanelEvent> value )

void AddAttribute( int sequence, System.Object value, System.Action<T> setter )