export interface CharSequence {
    length(): number;
    charAt(index: number): string;
    isEmpty(): boolean;
    subSequence(start: number, end: number): CharSequence;
    toString(): string | null;
}
export declare function compare(cs1: CharSequence | null, cs2: CharSequence | null): number;
export declare function cast_java_lang_CharSequence(obj: unknown): CharSequence;
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