Gets the state map of a feature within a style source. Note that updates to feature state are asynchronous, so changes made by other methods might not be immediately visible.
Parameters
callback
The `query feature state callback` called when the query completes.
featureId
The feature identifier of the feature whose state should be queried.
sourceId
The style source identifier.
sourceLayerId
The style source layer identifier (for multi-layer sources such as vector sources).