You're seeing just the macro sse, go back to Buckaroo.Router module for more information.
Link to this macro

sse(expr, opts)

View Source (macro)

Dispatches to the event source.

Server-Sent Events (SSE) is a server push technology enabling a client to receive automatic updates from a server via HTTP connection.

See Plug.Router.match/3 for more examples.


sse "/eventsource", source: ExampleEventSource