### Function: AddQuestPrereqTradeskillClass(param1, param2, param3)

**Description:**
Placeholder description.

**Parameters:**
- `param1`: unknown - Unknown type.
- `param2`: unknown - Unknown type.
- `param3`: int8 - Small integer or boolean flag.

**Returns:** None.

**Example:**

```lua
-- Example usage
AddQuestPrereqTradeskillClass(..., ..., ...)
```