interface DeriveProposalImage implements AtBlockimport { type DeriveProposalImage } from "https://dotland.deno.dev/x/polkadot@0.2.23/api-derive/democracy/types.ts"; Propertiesbalance: Balanceoptionalproposal: CalloptionalproposalHash: HexStringoptionalproposalLen: numberproposer: AccountId