class Spanimport { Span } from "https://deno.land/x/hc_spans@v0.2.0/mod.ts"; ConstructorsnewSpan(arg: | Skipped | NoParent | FromRequest | FromSpan)Propertiesoptionalduration: numberoptionalextra: ExtraDataname: stringoptionalparentId: stringservice: stringspanId: stringspans: Span[]startTime: numbertraceId: stringMethodshcJSON()