# `GSShapeGroup groupIndexRange`

*Instance Method*

The range of layer shape indices that includes all group members and the index of the group shape itself (which is always at the last index of the range).

## Declaration

```objc
- (NSRange) groupIndexRange;
```

```python
groupIndexRange() -> NSRange
```

## Discussion

Returns a range with a location of `NSNotFound` if the group is not part of a layer.

> **Complexity**
> O(*n*) where *n* is the number of shapes in the layer.

## See Also

### Membership

- [`GSShapeGroup containsShape:`](/Core/GlyphsCore/GSShapeGroup/containsShape:) — Returns whether the given shape is a member of the group.
- [`GSShapeGroup depthOfShape:`](/Core/GlyphsCore/GSShapeGroup/depthOfShape:) — Returns the relative depth of the shape within the group.