recursively list should use itertools
recursively list should use itertools

if the list "parsedData["metadata"][key]" - line ~150 contains items of type list, the join operations fails
better to use itertools
chrismattmann/tika-img-similarity,chrismattmann/tika-similarity,YongchaoShang/tika-img-similarity,YongchaoShang/tika-img-similarity,chrismattmann/tika-similarity,chrismattmann/tika-img-similarity