method GenericExtrinsic.prototype.addSignatureimport { GenericExtrinsic } from "https://dotland.deno.dev/x/polkadot@0.2.35/types/mod.ts"; addSignature(signer: Address | Uint8Array | string,signature: Uint8Array | HexString,payload: ExtrinsicPayloadValue | Uint8Array | HexString,): GenericExtrinsic<A>Parameterssigner: Address | Uint8Array | stringsignature: Uint8Array | HexStringpayload: ExtrinsicPayloadValue | Uint8Array | HexStringReturnsGenericExtrinsic<A>