    # File lib/amalgalite/csv_table_importer.rb, line 68
        def validate
          raise ArgumentError, "CSV file #{@csv_path} does not exist" unless File.exist?( @csv_path )
          raise ArgumentError, "CSV file #{@csv_path} is not readable" unless File.readable?( @csv_path )
          raise ArgumentError, "The table '#{@table_name} is not found in the database.  The known tables are #{table_list.sort.join(", ")}" unless @table
        end