_deep_transform_keys_in_object

# File activesupport/lib/active_support/core_ext/hash/keys.rb, line 116
    def _deep_transform_keys_in_object(object, &block)
      case object
      when Hash
        object.each_with_object(self.class.new) do |(key, value), result|
          result[yield(key)] = _deep_transform_keys_in_object(value, &block)
        end
      when Array
        object.map { |e| _deep_transform_keys_in_object(e, &block) }
      else
        object
      end
    end