---
source_files:
  - Common/DTS.Common/Classes/GroupTemplates/Constants.cs
generated_at: "2026-04-16T03:15:43.815320+00:00"
model: "Qwen/Qwen3-Coder-Next-FP8"
schema_version: 1
sha256: "1a584874abe7fb97"
---

# GroupTemplates

## 1. Purpose  
This module defines a集中 set of string constants used to identify non-ISO test object types and related metadata within the DTS (likely *Device Test System*) codebase. It exists to provide a single source of truth for hardcoded string literals associated with proprietary or non-standard test object channels, ensuring consistency and reducing the risk of typos or mismatches when referencing these special identifiers elsewhere in the system.

## 2. Public Interface  
The module exposes only a `static class` named `Constants` (no instance members). All members are `public const string` fields:

- `public const string NON_ISO_TESTOBJECT_CHANNEL_TYPE = "x_NonISOTestObjectType_x";`  
  A constant string used as a channel type identifier for non-ISO test objects.

- `public const string NON_ISO_TESTOBJECT_NAME = "x_NonISOTestObjectName_x";`  
  A constant string used as a name identifier for non-ISO test objects.

- `public const string NON_ISO_TESTOBJECT_CHANNEL_TYPE2 = "NONISO_x_";`  
  A second, distinct constant string used as a channel type identifier—likely for a different variant or legacy path for non-ISO test objects.

## 3. Invariants  
- All constant values are compile-time literals and cannot be modified at runtime.  
- The values `"x_NonISOTestObjectType_x"`, `"x_NonISOTestObjectName_x"`, and `"NONISO_x_"` are *exact* and case-sensitive; any usage must match them precisely.  
- No validation or runtime checks are performed by this module itself—conformance is the responsibility of consumers.

## 4. Dependencies  
- **No external dependencies**: This file contains no `using` directives and references no other types or assemblies.  
- **Consumers**: Based on naming and structure, this module is intended to be referenced by other modules in the `DTS.Common` assembly (or potentially other assemblies referencing it), particularly those handling test object creation, routing, or serialization logic where non-ISO types must be distinguished from standard ISO-compliant ones.

## 5. Gotchas  
- The suffix `_x` in the first two constants (`NON_ISO_TESTOBJECT_CHANNEL_TYPE`, `NON_ISO_TESTOBJECT_NAME`) appears intentional but unusual—likely a marker for "extended" or "custom" (non-standard) types. Developers should not assume `_x` is a generic placeholder; it is part of the literal value.  
- `NON_ISO_TESTOBJECT_CHANNEL_TYPE2` has no trailing underscore in its value (`"NONISO_x_"`), unlike the others. This suggests it may be used in a different context (e.g., as a prefix rather than a full identifier), and mixing usage could lead to mismatches.  
- No documentation comments (XML doc) are present in the source, so the semantic distinction between `NON_ISO_TESTOBJECT_CHANNEL_TYPE` and `NON_ISO_TESTOBJECT_CHANNEL_TYPE2` is not self-evident from this file alone.  
- None identified from source alone.