# `GSPluginHandler.fileFormatClasses`

*Instance Property*

Array of classes conforming to the `GlyphsFileFormat` protocol.

## Declaration

```swift
var fileFormatClasses: NSMutableArray { get set }
```

```objc
@property (strong) NSMutableArray<Class> * fileFormatClasses;
```

```python
fileFormatClasses() -> list[type]
setFileFormatClasses_(fileFormatClasses: list[type])
```