src/vs/workbench/contrib/customEditor/browser/customEditorInput.ts/CustomEditorInput/mediumDescription
class CustomEditorInput:	private get mediumDescription(): string {
		if (typeof this._mediumDescription !== 'string') {
			this._mediumDescription = this.labelService.getUriLabel(dirname(this.resource), { relative: true });
		}

		return this._mediumDescription;
	}