interface IStruct implements Map<K, V>, Codecimport { type IStruct } from "https://dotland.deno.dev/x/polkadot@0.2.45/types-codec/types/index.ts"; Type ParametersoptionalK = stringoptionalV extends Codec = CodecPropertiesreadonlydefKeys: string[]MethodsgetAtIndex(index: number): CodectoArray(): Codec[]import IStructimport { IStruct } from "https://dotland.deno.dev/x/polkadot@0.2.45/types-codec/types/index.ts";