Why was this class instantiated inside itself?

Question

Please help me understand this code. Is this like an enumeration with objects instead of values? Is there are term or pattern that explains this process?

public class State
{
    private State(String value)
    {
        Value = value; 
    }

    public String Value { get; set; }

    public static State Open => new State("Open");

    public static State Closed => new State("Closed");

    public static State YourOpen => new State("YourOpen");

    public static State YourClosed => new State("YourClosed");
}

Answer 1

It seems to be a class that:

1. allows to create instances with custom status values (not publicly accessible!)
2. provides instances of itself with pre-defined values

I had overlooked the private constructor. As @jacob-krall pointed out the typesafe enum (coming from older Java) seems to suit best.