Feature class to be used when creating features. The default is Feature. If performance is the primary concern and features are not going to be modified, consider using RenderFeature (Circle and GeometryCollection are not supported. As coordinates are flattened, multi geometries and polygons with holes are not well rendered). Default to ol/Feature.
Optional
featureFeature projection. Defaults to undefined (no conversion).
Optional
headerCallback that will receive header metadata when available. Defaults to undefined.
Header to request the file from. Defaults to an empty object.
Disable caching of the file. Defaults to false.
Data projection. Defaults to EPSG:4326