✅ Redis.OM create key from 2 fields

public class Sensor:Entity
{
    public int Id { get; set; }
    public int StationId { get; set; }
    public string Name { get; set; }
    [Indexed(Sortable = true)]
    public DateTime? TimeWindowStart { get; set; }
    [Indexed(Sortable = true)]
    public DateTime? TimeWindowEnd { get; set; }
    public DateTime? MeasuredTime { get; set; }
    public string Unit { get; set; }
    public int Value { get; set; }
}

public class Sensor:Entity
{
    public int Id { get; set; }
    public int StationId { get; set; }
    public string Name { get; set; }
    [Indexed(Sortable = true)]
    public DateTime? TimeWindowStart { get; set; }
    [Indexed(Sortable = true)]
    public DateTime? TimeWindowEnd { get; set; }
    public DateTime? MeasuredTime { get; set; }
    public string Unit { get; set; }
    public int Value { get; set; }
}