Function pluginIndex_set

pluginIndex_set(source: string): void
Sets the index override.
Parameters
- source: string
  The index source word (owner/repo[@ref], cube:<path>, host:<path>).
Returns void
Example
```
pluginIndex_set('FNNDSC/chris-plugins@v2026.11');
```
- Defined in packages/brasa/src/config/indexConfig.ts:92