interface IStruct implements Map<K, V>, Codecimport { type IStruct } from "https://dotland.deno.dev/x/polkadot@0.2.23/types-codec/types/interfaces.ts"; Type ParametersoptionalK = stringoptionalV extends Codec = CodecPropertiesreadonlydefKeys: string[]MethodsgetAtIndex(index: number): CodectoArray(): Codec[]