def raw_get(option)
      value = options_storage[option]
      Confo.callable_without_arguments?(value) ? value.call : value
    end
def raw_get(option)
      value = options_storage[option]
      Confo.callable_without_arguments?(value) ? value.call : value
    end
Internal method to get an option.
 If value is callable without arguments
 it will be called and result will be returned.