src/vs/workbench/services/extensions/common/abstractExtensionService.ts/AbstractExtensionService/_getExtensionHostManagers
class AbstractExtensionService:	protected _getExtensionHostManagers(kind: ExtensionHostKind): IExtensionHostManager[] {
		return this._extensionHostManagers.filter(extHostManager => extHostManager.kind === kind);
	}