export interface CompletionOptions {
    /** Which ref this completer handles: 'ref/prompt' or 'ref/resource' */
    refType: 'ref/prompt' | 'ref/resource';
    /** The prompt name or resource template URI this completer is for */
    refName: string;
}
export interface CompletionMetadata {
    refType: 'ref/prompt' | 'ref/resource';
    refName: string;
    methodName: string;
    target: abstract new (...args: unknown[]) => unknown;
}
export declare function Completion(options: CompletionOptions): MethodDecorator;
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