存在可選的int參數'currentPageNum'，但因爲聲明爲基本類型，不能轉換爲空值。考慮將其聲明爲對應基本類型的對象包裝器。

Optional int parameter ‘currentPageNum’ is present but cannot be translated into a null value due to being declared as a primitive type. Consider declaring it as object wrapper for the corresponding p

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