rhino.utilcall_with_ctx(fn, ctx, *args, **kw)Call fn with or without 'ctx', depending on its signature.
If the fn callable accepts an argument named "ctx", then ctx will be passed as a keyword argument, else it will be ignored.
sse_event(event=None, data=None, id=None, retry=None, comment=None, encoding='utf-8')Encode a Server-Sent Event (SSE).
At least one field must be present. All fields are strings, except retry, which should be an integer. The data and comment fields can contain newlines.