module Grape::DSL::RequestResponse::ClassMethods

def default_error_formatter(new_formatter_name = nil)

Specify a default error formatter. 
def default_error_formatter(new_formatter_name = nil)
  return namespace_inheritable(:default_error_formatter) unless new_formatter_name
  new_formatter = Grape::ErrorFormatter.formatter_for(new_formatter_name)
  namespace_inheritable(:default_error_formatter, new_formatter)
end