    # 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