src/vs/workbench/contrib/extensions/browser/extensionRecommendationsService.ts/ExtensionRecommendationsService/toExtensionRecommendations
class ExtensionRecommendationsService:	private toExtensionRecommendations(recommendations: ReadonlyArray<ExtensionRecommendation>): string[] {
		const extensionIds = distinct(recommendations.map(e => e.extensionId))
			.filter(extensionId => this.isExtensionAllowedToBeRecommended(extensionId));

		return extensionIds;
	}