/scratch/workspace/artdaq-demo-v2_10_00/SLF6/s48-e10-debug/build/artdaq_node_server/v1_00_08/src/node_modules/xml2js/node_modules/xmlbuilder/node_modules/lodash/flatMapDeep.js
function duplicate(n) { return [[[n, n]]]; }
_.flatMapDeep([1, 2], duplicate); // => [1, 1, 2, 2]