@exportSymbol ol.format.GeoJSON
@exportProperty ol.format.GeoJSON.prototype.readFeature
@exportProperty ol.format.GeoJSON.prototype.readFeatures
@exportProperty ol.format.GeoJSON.prototype.readGeometry
@exportProperty ol.format.GeoJSON.prototype.readProjection
@exportProperty ol.format.GeoJSON.prototype.writeFeature
@exportProperty ol.format.GeoJSON.prototype.writeFeatures
@exportProperty ol.format.GeoJSON.prototype.writeGeometry