import { Account, Namespace } from '../../internal';
import { SubCallback, SubsidyWithAllowance, UnsubCallback } from '../../types';
/**
 * Handles all Account Subsidies related functionality
 */
export declare class Subsidies extends Namespace<Account> {
    /**
     * Get the list of Subsidy relationship along with their subsidized amount for which this Account is the subsidizer
     */
    getBeneficiaries(): Promise<SubsidyWithAllowance[]>;
    /**
     * Get the Subsidy relationship along with the subsidized amount for this Account is the beneficiary.
     *
     * @returns the Subsidy relationship, or null if this Account isn't being subsidized
     */
    getSubsidizer(): Promise<SubsidyWithAllowance | null>;
    /**
     * Get the Subsidy relationship along with the subsidized amount for this Account is the beneficiary.
     *
     * @param callback - Callback function that can be used to listen for changes to the subsidy relationship
     *
     * @note can be subscribed to, if connected to node using a web socket
     * @returns the Subsidy relationship, or null if this Account isn't being subsidized
     */
    getSubsidizer(callback: SubCallback<SubsidyWithAllowance | null>): Promise<UnsubCallback>;
    /**
     * Get pending subsidies (for which this Account is the beneficiary) that have been authorised but not yet accepted.
     */
    getPendingSubsidies(): Promise<SubsidyWithAllowance[]>;
}
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