Include the GameObject when precomputing lighting data.
For more information on precomputed lighting, see the documentation on the Lighting system.
void StaticEditorFlagsExample(){
// Create a GameObject
var go = new GameObject("Example");
// Set the GameObject's StaticEditorFlags
var flags = StaticEditorFlags.ContributeGI;
GameObjectUtility.SetStaticEditorFlags(go,flags);
}