How does Console.WriteLine() take a StringBuilder object?

Question

C++ / C#

I know that you can print a number, a string, even a function (more precisely, its return value).
But is it possible to print an object?
Does an object return a value?
How is this possible?

StringBuilder x=new StringBuilder("текст");
Console.WriteLine(x);

Answer 1

Read the book about redefining ToString

public class Test
        {
            private string _text;
            public Test(string text)
            {
                this._text = text;
            }

            public override string ToString()
            {
                return _text;
            }
        }

var x = new Test("текст");
            Debug.WriteLine(x);