isPrEventKey( key: unknown,): key is | "pr:comment:added" | "pr:comment:deleted" | "pr:comment:edited" | "pr:declined" | "pr:deleted" | "pr:from_ref_updated" | "pr:merged" | "pr:modified" | "pr:opened" | "pr:reviewer:approved" | "pr:reviewer:changes_requested" | "pr:reviewer:unapproved" | "pr:reviewer:updated" Returns key is
| "pr:comment:added"
| "pr:comment:deleted"
| "pr:comment:edited"
| "pr:declined"
| "pr:deleted"
| "pr:from_ref_updated"
| "pr:merged"
| "pr:modified"
| "pr:opened"
| "pr:reviewer:approved"
| "pr:reviewer:changes_requested"
| "pr:reviewer:unapproved"
| "pr:reviewer:updated"