src/vs/workbench/api/common/extHostExtensionActivator.ts/ExtensionsActivator/_activateExtensions
class ExtensionsActivator:	private async _activateExtensions(extensions: ActivationIdAndReason[]): Promise<void> {
		const operations = extensions
			.filter((p) => !this.isActivated(p.id))
			.map(ext => this._handleActivationRequest(ext));
		await Promise.all(operations.map(op => op.wait()));
	}