# File lib/new_relic/agent/stats_engine/stats_hash.rb, line 136
      def merge!(other)
        @started_at = other.started_at if other.started_at < @started_at

        other.each do |spec, val|
          if spec.scope.empty?
            merge_or_insert(@unscoped, spec.name, val)
          else
            merge_or_insert(@scoped, spec, val)
          end
        end
        self
      end