import { GenericImmortalEra } from "https://dotland.deno.dev/x/polkadot@0.2.23/types/extrinsic/index.ts";
x/polkadot/types/extrinsic/index.ts>GenericImmortalEra
import { GenericImmortalEra } from "https://dotland.deno.dev/x/polkadot@0.2.23/types/extrinsic/index.ts";