function typesKnown.getSpecExtensionsimport { typesKnown } from "https://dotland.deno.dev/x/polkadot@0.2.23/mod.ts"; const { getSpecExtensions } = typesKnown; getSpecExtensions(unnamed 0: Registry,chainName: Text | string,specName: Text | string,): ExtDefParametersunnamed 0: RegistrychainName: Text | stringspecName: Text | stringReturnsExtDef