src/vs/workbench/contrib/preferences/browser/preferencesRenderers.ts/FilteredMatchesRenderer/computeHiddenRanges
class FilteredMatchesRenderer:	private computeHiddenRanges(filteredGroups: ISettingsGroup[] | undefined, allSettingsGroups: ISettingsGroup[]): IRange[] {
		// Hide the contents of hidden groups
		const notMatchesRanges: IRange[] = [];
		if (filteredGroups) {
			allSettingsGroups.forEach((group, i) => {
				notMatchesRanges.push({
					startLineNumber: group.range.startLineNumber - 1,
					startColumn: group.range.startColumn,
					endLineNumber: group.range.endLineNumber,
					endColumn: group.range.endColumn
				});
			});
		}

		return notMatchesRanges;
	}