import { type CanisterOptions } from "@dfinity/utils";
import { type NnsGovernanceTestService } from "../declarations";
import type { Neuron } from "./types/governance_converters";
export declare class NnsGovernanceTestCanister {
    private readonly canisterId;
    private readonly certifiedService;
    private constructor();
    static create(options?: CanisterOptions<NnsGovernanceTestService>): NnsGovernanceTestCanister;
    /**
     * Test method to update fields of a neuron.
     *
     * Only available in the governance test canister.
     */
    updateNeuron(neuron: Neuron): Promise<[] | [import("../declarations/nns/governance_test").GovernanceError]>;
}
