/**
 * Validates that the URL param ID matches the body ID.
 * Eliminates the repeated `if (id !== body.data.id)` check found in 28 places.
 *
 * @param paramName - The route param name (e.g., "rollId", "cullId")
 * @param bodyPath - Optional path to ID in body (default: "data.id")
 *
 * @example
 * ```typescript
 * @Put(`${endpoint}/:cullId`)
 * @ValidateId("cullId")
 * @CacheInvalidate(cullMeta, "cullId")
 * async update(@Res() reply, @Body() body: CullPutDTO) {
 *   return this.crud.update(reply, body);
 * }
 * ```
 */
export declare function ValidateId(paramName: string, bodyPath?: string): (target: any, propertyKey: string, descriptor: PropertyDescriptor) => PropertyDescriptor;
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