# File lib/amalgalite/database.rb, line 477
    def type_map=( type_map_obj )
      %w[ bind_type_of result_value_of ].each do |method|
        unless type_map_obj.respond_to?( method )
          raise Amalgalite::Error, "#{type_map_obj.class.name} cannot be used to do type mapping.  It does not respond to '#{method}'"
        end
      end
      @type_map = type_map_obj
    end