src/vs/workbench/contrib/experiments/common/experimentService.ts/ExperimentService/getExperimentsByType
class ExperimentService:	public getExperimentsByType(type: ExperimentActionType): Promise<IExperiment[]> {
		return this._loadExperimentsPromise.then(() => {
			if (type === ExperimentActionType.Custom) {
				return this._experiments.filter(x => x.enabled && (!x.action || x.action.type === type));
			}
			return this._experiments.filter(x => x.enabled && x.action && x.action.type === type);
		});
	}