src/vs/workbench/common/contributions.ts/WorkbenchContributionsRegistry/start
class WorkbenchContributionsRegistry:	start(accessor: ServicesAccessor): void {
		const instantiationService = this.instantiationService = accessor.get(IInstantiationService);
		const lifecycleService = this.lifecycleService = accessor.get(ILifecycleService);

		[LifecyclePhase.Starting, LifecyclePhase.Ready, LifecyclePhase.Restored, LifecyclePhase.Eventually].forEach(phase => {
			this.instantiateByPhase(instantiationService, lifecycleService, phase);
		});
	}