function util.objectPropertyimport { util } from "https://dotland.deno.dev/x/polkadot@0.2.38/mod.ts"; const { objectProperty } = util; objectProperty<S>(that: object,key: string,getter: (key: string,index: number,self: S,) => unknown,getName?: (key: string, index: number) => string,index?,): voidType ParametersSParametersthat: objectkey: stringgetter: (key: string,index: number,self: S,) => unknownoptionalgetName: (key: string, index: number) => stringoptionalindex = [UNSUPPORTED]Returnsvoid