export const MemoNone: "none";
export const MemoID: "id";
export const MemoText: "text";
export const MemoHash: "hash";
export const MemoReturn: "return";
export class Memo {
    static _validateIdValue(value: any): void;
    static _validateTextValue(value: any): void;
    static _validateHashValue(value: any): void;
    static none(): Memo;
    static text(text: string): Memo;
    static id(id: string): Memo;
    static hash(hash: array | string): Memo;
    static return(hash: array | string): Memo;
    static fromXDRObject(object: xdr.Memo): Memo;
    constructor(type: any, value?: null);
    _type: any;
    _value: Buffer | null;
    set type(arg: any);
    get type(): any;
    set value(arg: Buffer | null);
    get value(): Buffer | null;
    toXDRObject(): xdr.Memo;
}