Create a feature collection layer from a portal item.
Use case
Feature collection layers are often used to hold features with mixed geometry or unstructured data. You can display feature collections stored in a Portal, which are often used for showing content from a CSV or map notes.
How to use the sample
The feature collection is loaded from the Portal item when the sample starts.
How it works
Create a Portal.
Create the PortalItem, referring to the portal and an item ID.
Verify that the item represents a feature collection.
Create a FeatureCollection from the item.
Create a FeatureCollectionLayer, referring to the feature collection.
Add the feature collection layer to the map's OperationalLayers collection.
