# IQTService Interface

Namespace: [PIX.Services](https://help.qlik.com/en-US/qlikview-developer/May2024/Subsystems/QMSAPIref/Content/PIX.Services.htm)  
Assembly: PIX.dll

## Syntax

```
public interface IQTService : IQTService5
```

### Extension Methods

[ApiFilter.FilterFor<T>(T, Nullable<ApiVersion>)](https://help.qlik.com/en-US/qlikview-developer/May2024/Subsystems/QMSAPIref/Content/PIX.ApiFiltering.ApiFilter.FilterFor.htm#PIX_ApiFiltering_ApiFilter_FilterFor__1___0_System_Nullable_PIX_ApiVersion__)