Csharp 如何用 lambda 表达式决定应该处理哪个属性

上下文:我们有以下代码示例:

public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public int Age { get; set; }
}

public static class PersonExtension
{
    public static void TrimFirstName(Person person)
    {
        Console.WriteLine($"Start Trim {nameof(person.FirstName)}");
        person.FirstName = person.FirstName.Remove(32);
        Console.WriteLine($"End Trim {nameof(person.FirstName)}");
    }
    
    public static void TrimLastName(Person person)
    {
        Console.WriteLine($"Start Trim {nameof(person.LastName)}");
        person.LastName = person.LastName.Remove(32);
        Console.WriteLine($"End Trim {nameof(person.LastName)}");
    }
}

public class Program
{
    public static void Main()
    {
        var person = new Person { FirstName = "Foo", LastName = "Bar" };
        
        PersonExtension.TrimFirstName(person);
        PersonExtension.TrimLastName(person);
    }
}

目标:我们希望重构代码，并将函数TrimFirstName和TrimLastName转换为单个函数，以使其更加枯燥.

我们目前停留在lambda表达式上，试图解决这个问题:

public static class PersonExtension
{   
    public static void TrimName(this Person person, Func<Person, string> action)
    {
        // Console.WriteLine($"Start Trim {nameof(person.LastName)}"); // ??
        person.LastName = action(person).Remove(32); // how to assign to LastName/FirstName ???
        // Console.WriteLine($"End Trim {nameof(person.LastName)}"); // ??

        // more code here that uses person.<propertyName>
    }
}

public class Program
{
    public static void Main()
    {
        var person = new Person { FirstName = "Foo", LastName = "Bar" };
        
        person.TrimName(x => x.FirstName);
    }
}

问:我们如何使用lambda表达式来决定应该修剪哪些属性？