# File lib/new_relic/agent/transaction/trace_node.rb, line 44
        def to_array
          [ NewRelic::Helper.time_to_millis(@entry_timestamp),
            NewRelic::Helper.time_to_millis(@exit_timestamp),
            NewRelic::Coerce.string(@metric_name),
            params ] +
            [ (@called_nodes ? @called_nodes.map{|s| s.to_array} : []) ]
        end