## StreamFontSource.cache_key property

The key of this source in the cache.


```python
@property
def cache_key(self) -> str:
    ...

```

### Remarks

This key is used to identify cache item when saving/loading font search cache with
[FontSettings.save_search_cache()](../../fontsettings/save_search_cache/#bytesio) and [FontSettings.set_fonts_sources()](../../fontsettings/set_fonts_sources/#fontsourcebaselist_bytesio) methods.



### See Also

* module [aspose.words.fonts](../../)
* class [StreamFontSource](../)