src/vs/workbench/contrib/preferences/browser/preferencesSearch.ts/SettingMatches/constructor
class SettingMatches:	constructor(searchString: string, setting: ISetting, private requireFullQueryMatch: boolean, private searchDescription: boolean, private valuesMatcher: (filter: string, setting: ISetting) => IRange[]) {
		this.matches = distinct(this._findMatchesInSetting(searchString, setting), (match) => `${match.startLineNumber}_${match.startColumn}_${match.endLineNumber}_${match.endColumn}_`);
	}