Lists the app's currently occupied channels, optionally filtered by name prefix. Only channels whose name starts with this prefix (e.g. "presence-"). Per-channel attributes to include. Repeatable. Requesting `member_count` without a presence-channel `prefix`, or `connection_count` when the app's connection-counting flag is off, returns a validation error (400). The occupied channels, sorted by name. Distinct members (presence channels only; requires include=member_count). Connections currently subscribed to this channel (requires include=connection_count and the app's connection-counting flag). Channel-scoped — distinct from the app-wide peak connections metric. A Realtime channel name. Only letters, digits, and _ - = @ , . ; Prefix with `private-` or `presence-` for authenticated channels.