如果它的参数集没有被使用，有没有办法让Powershell函数忽略默认参数的值？

function Test-Function {
    param(
        [Parameter(Mandatory=$false)]
        [string]$Param1 = "Default value",
        
        [Parameter(Mandatory=$false)]
        [string]$Param2 = "Default value"
    )
    
    if ($PSBoundParameters.ContainsKey('Param1')) {
        Write-Host "Param1 is used: $Param1"
    }
    
    if ($PSBoundParameters.ContainsKey('Param2')) {
        Write-Host "Param2 is used: $Param2"
    }
}

# 调用函数并忽略默认参数的值
Test-Function -Param2 "Custom value"