import { createHeaderExtended } from "https://dotland.deno.dev/x/polkadot@0.2.45/api-derive/index.ts";
x/polkadot/api-derive/index.ts>createHeaderExtended
import { createHeaderExtended } from "https://dotland.deno.dev/x/polkadot@0.2.45/api-derive/index.ts";