/scratch/workspace/artdaq_demo-release-build/SLF6/s48-e14-debug/build/artdaq_node_server/v1_00_09/src/node_modules/xml2js/node_modules/xmlbuilder/node_modules/lodash/flatMapDepth.js
function duplicate(n) { return [[[n, n]]]; }
_.flatMapDepth([1, 2], duplicate, 2); // => [[1, 1], [2, 2]]