src/vs/workbench/api/browser/extensionHost.contribution.ts/ExtensionPoints/constructor
class ExtensionPoints:	constructor(
		@IInstantiationService private readonly instantiationService: IInstantiationService
	) {
		// Classes that handle extension points...
		this.instantiationService.createInstance(JSONValidationExtensionPoint);
		this.instantiationService.createInstance(ColorExtensionPoint);
		this.instantiationService.createInstance(IconExtensionPoint);
		this.instantiationService.createInstance(TokenClassificationExtensionPoints);
		this.instantiationService.createInstance(LanguageConfigurationFileHandler);
	}