Event raised upon receipt of a message request from Iguana.
The plugin should respond with either the next available unacknowledged message, or an empty message if no messages are available.
Exceptions should never be allowed to propagate out of the event handler. Event handlers should catch and handle all exceptions internally.
Namespace: iNTERFACEWARE.Iguana.Plugin
Assembly: IGC_dotnet (in IGC_dotnet.dll)