method types.GenericExtrinsicV4.prototype.signimport { types } from "https://dotland.deno.dev/x/polkadot@0.2.45/mod.ts"; const { GenericExtrinsicV4 } = types; sign(account: IKeyringPair, options: SignatureOptions): GenericExtrinsicV4Parametersaccount: IKeyringPairoptions: SignatureOptionsReturnsGenericExtrinsicV4