# File lib/aws/lazy_error_classes.rb, line 52
    def self.included(mod)
      unless mod.const_defined?(:BASE_ERROR_GRAMMAR)
        mod.const_set(:BASE_ERROR_GRAMMAR, XmlGrammar)
      end
      mutex = Mutex.new
      MetaUtils.extend_method(mod, :const_missing_mutex) { mutex }
      mod.send(:include, Errors)
      mod.extend(ClassMethods)
    end