method Keyring.prototype.addFromSeedimport { Keyring } from "https://dotland.deno.dev/x/polkadot@0.2.38/keyring/mod.ts"; addFromSeed(seed: Uint8Array,meta?: KeyringPair$Meta,type?: KeypairType,): KeyringPairParametersseed: Uint8Arrayoptionalmeta: KeyringPair$Meta = [UNSUPPORTED]optionaltype: KeypairType = [UNSUPPORTED]ReturnsKeyringPair