public void Test2()
{
var entity1 = new MyEntity
{
Class = "123",
Name = "aaa",
Comment = "comment",
};
var entity2 = new MyEntity
{
RegisterDate = DateTime.Now,
};
entity2.Accept(entity1, m => new { m.Class });
entity2.Accept(entity1, m => m.Comment);
entity2.Accept(entity1, m => m.RegisterDate);
Assert.Equal(entity2.Class, entity1.Class);
Assert.Equal(entity2.Comment, entity1.Comment);
Assert.NotEqual(entity2.Name, entity1.Name);
Assert.Null(entity2.RegisterDate);
}