export declare class GraphNode<T> {
    #private;
    constructor(content: T);
    get content(): T;
    set content(content: T);
    get adjacent(): Set<GraphNode<T>>;
    get parent(): GraphNode<T> | null;
    setParent(node: GraphNode<T>): void;
    addAdjacent(node: GraphNode<T>): void;
}
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