import { Verification } from "./decisions/verification";
import { Tag } from "./tag";
import { Hertz, Seconds } from "./unitConverters";
export declare class Annotation {
    constructor(startOffset: Seconds, endOffset: Seconds | null | undefined, lowFrequency: Hertz | null | undefined, highFrequency: Hertz | null | undefined, tags: Tag[], reference: object, verifications: Verification[]);
    startOffset: Seconds;
    endOffset: Seconds | null | undefined;
    lowFrequency: Hertz | null | undefined;
    highFrequency: Hertz | null | undefined;
    tags: Tag[];
    readonly reference: Readonly<object>;
    verifications: Verification[];
    valid(): boolean;
}