def to_camelback_keys(value = self)
      case value
      when Array
        value.map { |v| to_camelback_keys(v) }
      when Hash
        Hash[value.map { |k, v| [camelize_key(k, false), to_camelback_keys(v)] }]
      else
        value
      end
    end
def to_camelback_keys(value = self)
      case value
      when Array
        value.map { |v| to_camelback_keys(v) }
      when Hash
        Hash[value.map { |k, v| [camelize_key(k, false), to_camelback_keys(v)] }]
      else
        value
      end
    end
Recursively converts Rubyish snake_case hash keys to camelBack JSON-style
 hash keys suitable for use with a JSON API.