https://davefancher.com/2014/08/25/c-6- … d-members/
https://csharp.christiannagel.com/2017/ … edmembers/

Expression-Bodied Properties (C# 6)
Expression-Bodied Constructors (C# 7.0)
Expression-Bodied Destructors (C# 7.0)
Expression-Bodied Property Accessors (C# 7.0)
Expression-Bodied Event Accessors

C# 6

private int _x;
public X
{
    get
    {
        return _x;
    }
    set
    {
        _x = value;
    }
}

C# 7.0

private int _x;
public X
{
    get => _x;
    set => _x = value;
}