def indices(*names)
      names = Array(names).flatten
      names.compact.empty? ? @attributes[:indices] : (names.each { |n| @attributes[:indices].push(n) } and return self)
    end
def indices(*names)
      names = Array(names).flatten
      names.compact.empty? ? @attributes[:indices] : (names.each { |n| @attributes[:indices].push(n) } and return self)
    end
Get or set the alias indices