How to do it...

1. Consider the class SomeClass. It contains a constructor, finalizer, and a property. 

        public class SomeClass
        {
          private int _initialValue;

          // Property
          public int InitialValue
          {
            get
            {
              return _initialValue;
            }

            set
            {
              _initialValue = value;
            }
          }

          // Constructor
          public SomeClass(int initialValue)
          {
            InitialValue = initialValue;
          }

          // Finalizer
          ~SomeClass()
          {
            WriteLine("Release unmanaged code");
          }
        }

1. With expression-bodied members, the class SomeClass can be simplified and the number of lines of code reduced.

        public class SomeClass
        {
          private int _initialValue;

          public int InitialValue
          {
            get => _initialValue;
            set => _initialValue = value;
          }

          public SomeClass(int initialValue) => 
                 InitialValue = initialValue;

          ~SomeClass() => WriteLine("Release unmanaged code");
        }