src/vs/workbench/services/preferences/common/preferencesModels.ts/AbstractSettingsModel/getPreference
class AbstractSettingsModel:	getPreference(key: string): ISetting | undefined {
		for (const group of this.settingsGroups) {
			for (const section of group.sections) {
				for (const setting of section.settings) {
					if (key === setting.key) {
						return setting;
					}
				}
			}
		}

		return undefined;
	}