# File lib/fog/aws/storage.rb, line 136
        def require_mime_types
          begin
            # Use mime/types/columnar if available, for reduced memory usage
            require 'mime/types/columnar'
          rescue LoadError
            begin
              require 'mime/types'
            rescue LoadError
              Fog::Logger.warning("'mime-types' missing, please install and try again.")
              exit(1)
            end
          end
        end