Direct look up
To find the Twitter handle associated to a public key
import { getHandleAndRegistryKey } from "@bonfida/spl-name-service";
const pubkey = new PublicKey("FidaeBkZkvDqi1GXNEwB8uWmj9Ngx2HXSS5nyGRuVFcZ");
const [handle] = await getHandleAndRegistryKey(connection, pubkey);