src/vs/workbench/api/common/extHostExtensionService.ts/AbstractExtHostExtensionService/isActivated
class AbstractExtHostExtensionService:	public isActivated(extensionId: ExtensionIdentifier): boolean {
		if (this._readyToRunExtensions.isOpen()) {
			return this._activator.isActivated(extensionId);
		}
		return false;
	}