Send signal to channel. Go SDK

Hi,

Looking at the documentation a workflow can receiveSignals given a signal name but when it comes to sending a signal one has to specify the WorkflowID and the signal name, there is no way to just send a message on a specific channel and the workflow/workflows listening receives it ?

Signals are by definition targeted to specific workflow execution. Adding support to one to many notifications is a feature we consider adding at some point.