method Keyring.prototype.toJsonimport { Keyring } from "https://dotland.deno.dev/x/polkadot@0.2.23/keyring/index.ts"; toJson(address: string | Uint8Array, passphrase?: string): KeyringPair$JsonParametersaddress: string | Uint8Arrayoptionalpassphrase: stringReturnsKeyringPair$Json