TheOmenDen.StreamPulse.Scripting.Attributes.OnConnectionDownAttributeMarks a method as a handler fired when a monitored connection goes down gracefully — an intentional
close or user-disable of a connected source (spec 023). Fires for every applicable source; read
e.Source to branch. The method must accept (IScriptContext, ConnectionHealthContext).
See OnChatMessageAttribute for the supported return types.