static Catalog findNearestCatalogWithAlias(Path dir, String aliasName) {
		return Catalog.findNearestCatalogWith(dir, true, true,
				catalog -> catalog.aliases.containsKey(aliasName) ? catalog : null);
	}
Returns the given Alias from the local file system

@param aliasName The name of an Alias
@return An Alias object
src/main/java/dev/jbang/catalog/Alias.java