OptionalcallerOptionalnameName of the span. If not provided, uses the function name from caller info.
OptionalparentParent trace context. Can be:
If provided, the new span will be a child of this parent. If not provided, uses the current active context.
OptionaltracerTracer name to use. Defaults to "otel-cloudflare".
Override the caller info for this span. If not provided, will be captured automatically.