表达身体构造函数 - 多个变量

Question

Microsoft的Expression Bodied Constructors（https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/statements-expressions-operators/expression-bodied-members）示例显示以下内容，显然有效：

public class Location
{
     private string locationName;

     public Location(string name) => locationName = name;
}

但是当我尝试以下内容时，不要去：

public class Location
{
  private string locationName;
  private string locationCountry;

//but what about two variables?
// (the below code does not work, I get "Error CS8179 Predefinedtype 'System.ValueTuple`2' is not defined or imported)

public Location(string ln, string lc) => (locationName, locationCountry) = (ln, ld);
}