# File lib/grape/dsl/request_response.rb, line 44
        def default_error_formatter(new_formatter_name = nil)
          if new_formatter_name
            new_formatter = Grape::ErrorFormatter.formatter_for(new_formatter_name, {})
            namespace_inheritable(:default_error_formatter, new_formatter)
          else
            namespace_inheritable(:default_error_formatter)
          end
        end