added mlm to CollectionExt

Author: jonas-hurst

pystac/extensions/ext.py

@@ -156,6 +156,10 @@ def cube(self) -> DatacubeExtension[Collection]:
     def item_assets(self) -> dict[str, ItemAssetDefinition]:
         return ItemAssetsExtension.ext(self.stac_object).item_assets
 
+    @property
+    def mlm(self) -> MLMExtension[Collection]:
+        return MLMExtension.ext(self.stac_object)
+
     @property
     def render(self) -> dict[str, Render]:
         return RenderExtension.ext(self.stac_object).renders