src/vs/platform/configuration/common/configurationModels.ts/ConfigurationChangeEvent/doesAffectedKeysTreeContains
class ConfigurationChangeEvent:	private doesAffectedKeysTreeContains(affectedKeysTree: any, section: string): boolean {
		let requestedTree = toValuesTree({ [section]: true }, () => { });

		let key;
		while (typeof requestedTree === 'object' && (key = Object.keys(requestedTree)[0])) { // Only one key should present, since we added only one property
			affectedKeysTree = affectedKeysTree[key];
			if (!affectedKeysTree) {
				return false; // Requested tree is not found
			}
			requestedTree = requestedTree[key];
		}
		return true;
	}