reset (Rcov::DifferentialAnalyzer)

    # File lib/rcov.rb, line 436
      def reset
        @@mutex.synchronize do
          if self.class.hook_level == 0
            # Unfortunately there's no way to report this as covered with rcov:
            # if we run the tests under rcov self.class.hook_level will be >= 1 !
            # It is however executed when we run the tests normally.
            Rcov::RCOV__.send(@reset_meth)
            @start_raw_data = data_default
            @end_raw_data = data_default
          else
            @start_raw_data = @end_raw_data = raw_data_absolute
          end
          @raw_data_relative = data_default
          @aggregated_data = data_default
        end
      end