如何在被覆盖的方法中从计算表达式调用基本F#方法？

// 定义基类
type BaseClass() =
    member this.Calculate(x: int, y: int) =
        x + y

// 定义派生类
type DerivedClass() =
    inherit BaseClass()
    
    // 重写Calculate方法
    override this.Calculate(x: int, y: int) =
        // 在这里调用基类的Calculate方法
        let baseResult = base.Calculate(x, y)
        
        // 执行额外的计算
        baseResult * 2

open System

// 基类
type BaseClass() =
    member this.Calculate(x: int, y: int) =
        printfn "BaseClass Calculate: %d" (x + y)
        x + y

// 派生类
type DerivedClass() =
    inherit BaseClass()
    
    // 重写Calculate方法
    override this.Calculate(x: int, y: int) =
        printfn "DerivedClass Calculate - Before base call"
        let baseResult = base.Calculate(x, y)
        printfn "DerivedClass Calculate - After base call"
        baseResult * 2

// 使用派生类
let derived = DerivedClass()
let result = derived.Calculate(3, 4)
printfn "Final result: %d" result