GetCancelReason retrieves the cancel reason for a context that has been created via WithCancelReason.

RunWithTimeout runs a function with a timeout, the same way you'd do with context.WithTimeout.

WithCancel adds an info log to context.WithCancel's CancelFunc.

WithCancelReason adds a CancelFunc to this context, returning a new cancellable context and a CancelWithReasonFunc, which is like context.CancelFunc, except it also takes a "reason" error.

TimeoutError is a wrapped ContextDeadlineExceeded error.

CancelWithReasonFunc is a context.CancelFunc that also passes along an error that is the reason for cancellation.