# File lib/new_relic/agent/transaction/trace_node.rb, line 136
        def each_node_with_nest_tracking(&block)
          summary = block.call self
          summary.current_nest_count += 1 if summary

          if @called_nodes
            @called_nodes.each do |node|
              node.each_node_with_nest_tracking(&block)
            end
          end

          summary.current_nest_count -= 1 if summary
        end