Add Clarification for modifying ShapeCollections

Spinoff task from #7622
mapbox · Jan 11, 2017 · 19d1216 · 19d1216
1 parent 57644b2
commit 19d1216
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/platform/darwin/src/MGLShapeSource.h b/platform/darwin/src/MGLShapeSource.h
@@ -147,11 +147,14 @@ extern const MGLShapeSourceOption MGLShapeSourceOptionSimplificationTolerance;
 
 /**
  The contents of the source. A shape can represent a GeoJSON geometry, a
- feature, or a collection of features.
+ feature, or a collection of features. 
 
  If the receiver was initialized using `-initWithIdentifier:URL:options:`, this
  property is set to `nil`. This property is unavailable until the receiver is
  passed into `-[MGLStyle addSource:]`.
+ 
+ You can get/set the shapes within a collection via this property. Setting
+ this property must be performed on the application's main thread.
  */
 @property (nonatomic, copy, nullable) MGLShape *shape;