function isKeyringPairimport { isKeyringPair } from "https://dotland.deno.dev/x/polkadot@0.2.38/api/util/isKeyringPair.ts"; isKeyringPair(account: | string | IKeyringPair | AccountId | Address): account is IKeyringPairParametersaccount: | string | IKeyringPair | AccountId | AddressReturnsaccount is IKeyringPair