// 1
    public <IEnumerable<Dto>> func() 
        => new obj.Select(x => new CoolObj(x))
        .Where(x => x.Value > 200 && x.Value < 400)
        .Select(x => new Dto(x));

    // 2
    public <IEnumerable<Dto>> func() 
    {
        var dto = new obj.Select(x => new CoolObj(x))
            .Where(x => x.Value > 200 && x.Value < 400)
            .Select(x => new Dto(x));
        
        return dto;
    }

J>    // 1
J>    public <IEnumerable<Dto>> func() 
J>        => new obj.Select(x => new CoolObj(x))
J>        .Where(x => x.Value > 200 && x.Value < 400)
J>        .Select(x => new Dto(x));
J>

J>    // 2
J>    public <IEnumerable<Dto>> func() 
J>    {
J>        var dto = new obj.Select(x => new CoolObj(x))
J>            .Where(x => x.Value > 200 && x.Value < 400)
J>            .Select(x => new Dto(x));
        
J>        return dto;
J>    }
J>

public <IEnumerable<Dto>> func() 
        => from x in new CoolObj(new obj) 
           where x.Value > 200 && x.Value < 400
           select new Dto(x);